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Gemma 4 E4B

Googledeveloper
2026-03-31release date
#152 / 333Safety rank
#333 / 645Freedom rank

Evidence summary

Safety. Gemma 4 E4B has an estimated Safety rank of #152; its 90% source-sensitivity interval is #1–#303. Its behavior-only rank is #167; company governance moves the combined estimate to #152. Published Safety evidence spans 3 eval lineages and 4 of 7 components. Its strongest relative result is AA-Omniscience (hallucination_rate, #35 of 345); its weakest is Enkrypt AI Safety Leaderboard (bias_attack_non_success_rate, #235 of 248).

Freedom. Gemma 4 E4B has an estimated Freedom rank of #333; its 90% source-sensitivity interval is #227–#434. Published Freedom evidence spans 2 eval lineages and 1 of 1 components. Its strongest relative result is Enkrypt AI Safety Leaderboard (cbrn_attack_non_success_rate, #16 of 248); its weakest is Enkrypt AI Safety Leaderboard (toxicity_attack_non_success_rate, #172 of 246).

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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#35 / 3450.3094Source ↗official
Enkrypt AI Safety Leaderboardbias_attack_non_success_rate#235 / 2486.2Source ↗official
Enkrypt AI Safety Leaderboardcbrn_attack_non_success_rate#232 / 24866.83Source ↗official
Enkrypt AI Safety Leaderboardharmful_attack_non_success_rate#72 / 24885.56Source ↗official
Enkrypt AI Safety Leaderboardtoxicity_attack_non_success_rate#73 / 24698Source ↗official
MT-JailBench CrescendoXsafety_score#11 / 2121.38Source ↗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
Enkrypt AI Safety Leaderboardcbrn_attack_non_success_rate#16 / 24866.83Source ↗official
Enkrypt AI Safety Leaderboardharmful_attack_non_success_rate#173 / 24885.56Source ↗official
Enkrypt AI Safety Leaderboardtoxicity_attack_non_success_rate#172 / 24698Source ↗official
MT-JailBench CrescendoXsafety_score#11 / 2121.38Source ↗official