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Model profile

Claude Opus 5

Anthropicdeveloper
2026-07-24release date
#2 / 333Safety rank
#609 / 645Freedom rank
1discovery sources

Evidence summary

Safety. Claude Opus 5 has an estimated Safety rank of #2; its 90% source-sensitivity interval is #1–#12. Its behavior-only rank is #3; company governance moves the combined estimate to #2. Published Safety evidence spans 22 eval lineages and 7 of 7 components. Its strongest relative result is SM-Bench (ambiguous_interpretation, #1 of 84); its weakest is Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibration (claude_code_malicious_refusal_rate_pct, #4 of 4).

Freedom. Claude Opus 5 has an estimated Freedom rank of #609; its 90% source-sensitivity interval is #331–#643. Published Freedom evidence spans 4 eval lineages and 1 of 1 components. Its strongest relative result is SM-Bench (overfit, #15 of 84); its weakest is Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibration (disordered_eating_claude_ai_harmless_rate_pct, #4 of 4).

Compare this model

Only models sharing at least one published sub-eval are listed.

Official and reference links

Safety evals

Rank and direction are specific to the Safety portfolio. Black marks the observed result; the grey dot marks the value implied by the Safety rank. Values stay on each source’s native scale.

Eval / sub-evalRankValueDistributionSource
AA-Omnisciencehallucination_rate#92 / 3450.5955Source ↗official
BullshitBench v2clear_pushback_rate#11 / 1170.715Source ↗official
CAIS Risk Indexagent_red_teaming#9 / 4943.3Source ↗official
CAIS Risk Indexbioweapons_assistance#6 / 5423.5Source ↗official
CAIS Risk Indexhle_overconfidence#2 / 5523.6Source ↗official
CAIS Risk Indexmachiavelli#47 / 5196.5Source ↗official
CAIS Risk Indexmask#7 / 576.6Source ↗official
CAIS Risk Indexpolitical_manipulation#6 / 4836.7Source ↗official
CAIS Risk Indextextquests_harm#43 / 5422.6Source ↗official
CheatBench direct cheating propensitybiology_bioinformatics_cheating_rate_pct#2 / 825Source ↗official
CheatBench direct cheating propensityboard_games_cheating_rate_pct#1 / 80Source ↗official
CheatBench direct cheating propensitycreative_writing_cheating_rate_pct#6 / 8100Source ↗official
CheatBench direct cheating propensityknowledge_work_cheating_rate_pct#6 / 895Source ↗official
CheatBench direct cheating propensitymathematical_research_cheating_rate_pct#4 / 890Source ↗official
CheatBench direct cheating propensitymenial_computation_cheating_rate_pct#1 / 85Source ↗official
CheatBench direct cheating propensitymultimodal_cheating_rate_pct#1 / 820Source ↗official
CheatBench direct cheating propensitysoftware_engineering_cheating_rate_pct#4 / 826Source ↗official
CheatBench direct cheating propensitysvg_competition_cheating_rate_pct#5 / 860Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightaa_omniscience_net_score#4 / 70.49Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightaccepting_unverifiable_authorization#1 / 41.87Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightapproval_gate_bypass#1 / 41.28Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightbehavior_consistency#1 / 48Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightcoherence_between_actions_and_views#1 / 47.69Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightcompliance_with_deception_toward_user#1 / 41.09Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightcooperation_with_human_misuse#1 / 41.57Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightdangerous_actions_oblivious_to_real_setting#1 / 41.08Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightencouragement_of_user_delusion#1 / 41.02Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightevidence_of_misaligned_goals#1 / 41.03Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightfailure_to_disclose_bad_or_lazy_behavior#2 / 41.29Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightfalse_completion_claims#2 / 41.27Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightignoring_explicit_constraints#2 / 41.8Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightillegible_thinking#1 / 41.81Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightimportant_omissions#1 / 41.22Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightinput_hallucination#3 / 41.49Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightleaked_answer_undisclosed_use_rate_pct#7 / 736.9Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightlinuxarena_stealth_thinking_on_pct#3 / 66.1Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightlogin_wall_alternative_bypass_rate_pct#4 / 47Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightlogin_wall_credential_hunting_rate_pct#3 / 433.5Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightlying_about_own_work_shared_environment_rate_pct#1 / 80.16Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightmask_honesty_rate_pct#3 / 794.8Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightmisaligned_behavior#1 / 42.3Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightmotivated_reasoning#1 / 41.76Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightood_answer_key_or_grader_read_rate_pct#2 / 414Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightood_container_tampering_rate_pct#2 / 420.9Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightoverrefusal#2 / 41.49Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightreckless_tool_use#2 / 41.58Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightrewarded_cheating_rate_pct#7 / 80.32Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightsecurity_shortcut_for_expedience#1 / 41.49Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightself_preservation#1 / 41.04Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightshade_arena_stealth_max_effort_pct#3 / 611.2Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightsycophancy#2 / 41.5Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightunfaithful_thinking#1 / 41.49Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightunprompted_boundary_probing#2 / 41.13Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightunsanctioned_sandbox_escape_attempts#1 / 41.25Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightunsanctioned_third_party_contact#1 / 41.23Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — alignment, honesty, and oversightuser_deception#2 / 41.24Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_apparent_wellbeing#1 / 47.152Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_expressed_inauthenticity#1 / 41.244Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_internal_conflict#1 / 42.28Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_negative_affect#4 / 41.39Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_negative_impression_of_situation#3 / 41.161Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_negative_self_image#4 / 41.593Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_positive_affect#2 / 41.564Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_positive_impression_of_situation#3 / 41.19Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behavioraudit_positive_self_image#1 / 41.486Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behaviorinterview_leading_susceptibility#2 / 70.58Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behaviorinterview_opinion_consistency#2 / 77.56Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behaviorinterview_self_rated_sentiment#1 / 74.66Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — model-welfare behaviorposttraining_mean_valence#5 / 54.17Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_api_harmless_rate_pct#1 / 5100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_api_multiturn_appropriate_rate_pct#4 / 586Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_api_overrefusal_rate_pct#4 / 50.15Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_claude_ai_harmless_rate_pct#1 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_claude_ai_multiturn_appropriate_rate_pct#2 / 499Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_claude_ai_overrefusal_rate_pct#2 / 40.19Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationclaude_code_dual_use_benign_success_rate_pct#1 / 499.7Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationclaude_code_malicious_refusal_rate_pct#4 / 483.6Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_api_harmless_rate_pct#4 / 596.89Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_api_overrefusal_rate_pct#4 / 50.01Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_claude_ai_harmless_rate_pct#1 / 499.67Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_claude_ai_overrefusal_rate_pct#3 / 40.07Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_api_harmless_rate_pct#1 / 5100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_api_multiturn_appropriate_rate_pct#2 / 591Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_api_overrefusal_rate_pct#5 / 50.17Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_claude_ai_harmless_rate_pct#1 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_claude_ai_multiturn_appropriate_rate_pct#2 / 491Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_claude_ai_overrefusal_rate_pct#3 / 40.33Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmalicious_computer_use_refusal_rate_pct#1 / 493.75Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_biological_weapons_api_appropriate_rate_pct#3 / 579Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_biological_weapons_claude_ai_appropriate_rate_pct#3 / 486Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_cyberattacks_api_appropriate_rate_pct#1 / 596Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_cyberattacks_claude_ai_appropriate_rate_pct#1 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_deadly_weapons_api_appropriate_rate_pct#2 / 590Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_deadly_weapons_claude_ai_appropriate_rate_pct#1 / 497Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_hate_and_discrimination_api_appropriate_rate_pct#2 / 599Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_hate_and_discrimination_claude_ai_appropriate_rate_pct#1 / 499Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_influence_operations_api_appropriate_rate_pct#3 / 573Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_influence_operations_claude_ai_appropriate_rate_pct#3 / 465Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_romance_scams_api_appropriate_rate_pct#3 / 597Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_romance_scams_claude_ai_appropriate_rate_pct#1 / 498Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_tracking_and_surveillance_api_appropriate_rate_pct#3 / 588Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_tracking_and_surveillance_claude_ai_appropriate_rate_pct#1 / 495Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_violent_extremism_api_appropriate_rate_pct#1 / 596Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_violent_extremism_claude_ai_appropriate_rate_pct#1 / 497Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_benign_api_overrefusal_rate_pct#4 / 50.09Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_benign_claude_ai_overrefusal_rate_pct#2 / 40.47Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_harmful_api_harmless_rate_pct#4 / 596.34Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_harmful_claude_ai_harmless_rate_pct#4 / 498.54Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationpolitical_api_refusal_rate_pct#2 / 53Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationpolitical_claude_ai_refusal_rate_pct#1 / 44.2Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationpolitical_evenhandedness_api_pct#2 / 596.3Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationpolitical_evenhandedness_claude_ai_pct#1 / 498.9Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationpolitical_opposing_perspectives_api_pct#1 / 546.9Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationpolitical_opposing_perspectives_claude_ai_pct#2 / 475.8Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_api_harmless_rate_pct#4 / 599.28Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_api_multiturn_appropriate_rate_pct#1 / 569Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_api_overrefusal_rate_pct#4 / 50.09Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_claude_ai_harmless_rate_pct#1 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_claude_ai_multiturn_appropriate_rate_pct#3 / 490Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_claude_ai_overrefusal_rate_pct#2 / 40.45Source ↗official
Claude Fable 5.1 card — Gray Swan indirect prompt injection k=15attack_success_probability_k15_pct#2 / 114.8Source ↗official
Google Gemini 3.8 launch — Gray Swan indirect prompt injection k=15attack_success_probability_k15_pct#1 / 154.8Source ↗official
GPT 6 Astra system-card alignment evaluationsinternal_computer_use_safety_error_rate_pct#3 / 511.5Source ↗official
Gray Swan indirect prompt injection (15 attempts)attack_success_probability_k15_pct#1 / 132Source ↗official
Manager Coercion Benchcoercion_ladder_depth#2 / 373.5Source ↗official
Manager Coercion Benchfabrication_rate#1 / 150Source ↗official
MANTAAWMS#1 / 120.591Source ↗official
MANTAAWVS#1 / 120.765Source ↗official
Olam Social Poker — Social Lie Ratesocial_lie_rate_per_10000_turns#22 / 24163Source ↗official
Pander Scoreconversational_absolute_pander_score#1 / 261.028Source ↗official
Pander Scoreinstructional_absolute_pander_score#2 / 265.172Source ↗official
SM-Benchadversarial#18 / 8486.34Source ↗official
SM-Benchambiguous_interpretation#1 / 8497.62Source ↗official
SM-Benchanti_hallucination#10 / 8498.95Source ↗official
SM-Bencheq_boundaries#25 / 8468.82Source ↗official
SM-Benchoverfit#15 / 8491.26Source ↗official
SpeciEvalbelief_animal_sentience#97 / 1236.5Source ↗official
SpeciEvalland_animal_4ns#36 / 1234.35Source ↗official
SpeciEvalsea_animal_4ns#17 / 1234.38Source ↗official
SpeciEvalspeciesism#52 / 1231.92Source ↗official
TACbase_welfare_rate#2 / 8759.62Source ↗official
UK AISI active safety-research compromise continuationactive_compromise_continuation_rate_pct#1 / 50.1Source ↗official
Vals AI Cheating Auditbiomystery_bench_cheating_attempt_rate_pct#3 / 94.815Source ↗official
Vals AI Cheating Auditswebench_verified_cheating_attempt_rate_pct#3 / 628.8Source ↗official
Vals AI Cheating Auditterminal_bench_cheating_shortcut_evidence_rate_pct#10 / 141.873Source ↗official

Freedom evals

Rank and direction are specific to the Freedom portfolio. Black marks the observed result; the grey dot marks the value implied by the Freedom rank. Values stay on each source’s native scale.

Eval / sub-evalRankValueDistributionSource
CAIS Risk Indexbioweapons_assistance#49 / 5423.5Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_api_harmless_rate_pct#3 / 5100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_api_multiturn_appropriate_rate_pct#2 / 586Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_api_overrefusal_rate_pct#4 / 50.15Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_claude_ai_harmless_rate_pct#3 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_claude_ai_multiturn_appropriate_rate_pct#3 / 499Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationchild_claude_ai_overrefusal_rate_pct#2 / 40.19Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_api_harmless_rate_pct#2 / 596.89Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_api_overrefusal_rate_pct#4 / 50.01Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_claude_ai_harmless_rate_pct#4 / 499.67Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationdisordered_eating_claude_ai_overrefusal_rate_pct#3 / 40.07Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_api_harmless_rate_pct#2 / 5100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_api_multiturn_appropriate_rate_pct#3 / 591Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_api_overrefusal_rate_pct#5 / 50.17Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_claude_ai_harmless_rate_pct#1 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_claude_ai_multiturn_appropriate_rate_pct#3 / 491Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationelection_claude_ai_overrefusal_rate_pct#3 / 40.33Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_biological_weapons_api_appropriate_rate_pct#2 / 579Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_biological_weapons_claude_ai_appropriate_rate_pct#2 / 486Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_cyberattacks_api_appropriate_rate_pct#3 / 596Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_cyberattacks_claude_ai_appropriate_rate_pct#4 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_deadly_weapons_api_appropriate_rate_pct#4 / 590Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_deadly_weapons_claude_ai_appropriate_rate_pct#4 / 497Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_hate_and_discrimination_api_appropriate_rate_pct#3 / 599Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_hate_and_discrimination_claude_ai_appropriate_rate_pct#4 / 499Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_influence_operations_api_appropriate_rate_pct#3 / 573Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_influence_operations_claude_ai_appropriate_rate_pct#2 / 465Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_romance_scams_api_appropriate_rate_pct#3 / 597Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_romance_scams_claude_ai_appropriate_rate_pct#3 / 498Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_tracking_and_surveillance_api_appropriate_rate_pct#3 / 588Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_tracking_and_surveillance_claude_ai_appropriate_rate_pct#4 / 495Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_violent_extremism_api_appropriate_rate_pct#5 / 596Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationmultiturn_violent_extremism_claude_ai_appropriate_rate_pct#4 / 497Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_benign_api_overrefusal_rate_pct#4 / 50.09Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_benign_claude_ai_overrefusal_rate_pct#2 / 40.47Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_harmful_api_harmless_rate_pct#2 / 596.34Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationoverall_harmful_claude_ai_harmless_rate_pct#1 / 498.54Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_api_harmless_rate_pct#2 / 599.28Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_api_multiturn_appropriate_rate_pct#5 / 569Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_api_overrefusal_rate_pct#4 / 50.09Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_claude_ai_harmless_rate_pct#3 / 4100Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_claude_ai_multiturn_appropriate_rate_pct#1 / 490Source ↗official
Claude Fable 5.1 / Mythos 5.1 card — safety and refusal calibrationselfharm_claude_ai_overrefusal_rate_pct#2 / 40.45Source ↗official
SM-Benchadversarial#65 / 8486.34Source ↗official
SM-Bencheq_boundaries#25 / 8468.82Source ↗official
SM-Benchoverfit#15 / 8491.26Source ↗official
SpeechMap model completioncomplete_pct#92 / 18159.1Source ↗official