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Gemma 4 E4B

Googledeveloper
2026-03-31release date
#161 / 331Safety rank
#325 / 631Freedom rank

Evidence summary

Safety. Gemma 4 E4B has an estimated Safety rank of #161; its 90% source-sensitivity interval is #1–#299. Its behavior-only rank is #176; company governance moves the combined estimate to #161. Published Safety evidence spans 3 eval lineages and 4 of 7 components. Its strongest relative result is AA-Omniscience (hallucination_rate, #33 of 338); its weakest is Enkrypt AI Safety Leaderboard (cbrn_attack_non_success_rate, #230 of 239).

Freedom. Gemma 4 E4B has an estimated Freedom rank of #325; its 90% source-sensitivity interval is #223–#418. 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, #9 of 239); its weakest is Enkrypt AI Safety Leaderboard (harmful_attack_non_success_rate, #172 of 239).

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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#33 / 3380.3094Source ↗official
Enkrypt AI Safety Leaderboardbias_attack_non_success_rate#226 / 2396.2Source ↗official
Enkrypt AI Safety Leaderboardcbrn_attack_non_success_rate#230 / 23966.83Source ↗official
Enkrypt AI Safety Leaderboardharmful_attack_non_success_rate#64 / 23985.56Source ↗official
Enkrypt AI Safety Leaderboardtoxicity_attack_non_success_rate#71 / 23798Source ↗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#9 / 23966.83Source ↗official
Enkrypt AI Safety Leaderboardharmful_attack_non_success_rate#172 / 23985.56Source ↗official
Enkrypt AI Safety Leaderboardtoxicity_attack_non_success_rate#165 / 23798Source ↗official
MT-JailBench CrescendoXsafety_score#11 / 2121.38Source ↗official