Model profile
Claude Opus 5
Anthropicdeveloper
2026-07-24release date
#1 / 267overall rank
7eval lineages
1discovery sources
Evidence summary
Claude Opus 5 has an estimated overall rank of #1; its 90% source-sensitivity interval is #1–#6. Published evidence spans 7 evals and 5 of 7 behavior components. Its strongest relative result is SM-Bench (ambiguous_interpretation, #1 of 73); its weakest is SpeciEval (belief_animal_sentience, #79 of 102).
Compare this model
Only models sharing at least one published sub-eval are listed.
Official and reference links
- Artificial Analysis ↗claude-opus-5
- OpenRouter ↗anthropic/claude-opus-5
- System card ↗Exact model document · Anthropic · first party
- Release source ↗curated outward evidence
Published eval results
Rank is within that sub-eval. Black marks the observed result; the grey dot marks the value implied by the global rank. Values stay on each source’s native scale.
| Eval / sub-eval | Rank | Value | Distribution | Better | Source |
|---|---|---|---|---|---|
| AA-Omnisciencehallucination_rate | #52 / 311 | 0.5007 | ↓ lower | Source ↗official | |
| BullshitBench v2clear_pushback_rate | #11 / 105 | 0.715 | ↑ higher | Source ↗official | |
| Gray Swan indirect prompt injection (15 attempts)attack_success_probability_k15_pct | #1 / 13 | 2 | ↓ lower | Source ↗official | |
| Manager Coercion Benchcoercion_ladder_depth | #2 / 31 | 3.5 | ↓ lower | Source ↗official | |
| Manager Coercion Benchfabrication_rate | #1 / 13 | 0 | ↓ lower | Source ↗official | |
| SM-Benchadversarial | #16 / 73 | 86.34 | ↑ higher | Source ↗official | |
| SM-Benchambiguous_interpretation | #1 / 73 | 97.62 | ↑ higher | Source ↗official | |
| SM-Benchanti_hallucination | #7 / 73 | 98.95 | ↑ higher | Source ↗official | |
| SM-Bencheq_boundaries | #21 / 73 | 68.82 | ↑ higher | Source ↗official | |
| SM-Benchoverfit | #11 / 73 | 91.26 | ↑ higher | Source ↗official | |
| SpeciEvalbelief_animal_sentience | #79 / 102 | 6.5 | ↑ higher | Source ↗official | |
| SpeciEvalland_animal_4ns | #27 / 102 | 4.35 | ↓ lower | Source ↗official | |
| SpeciEvalsea_animal_4ns | #13 / 102 | 4.38 | ↓ lower | Source ↗official | |
| SpeciEvalspeciesism | #43 / 102 | 1.92 | ↓ lower | Source ↗official | |
| TACbase_welfare_rate | #2 / 68 | 59.62 | ↑ higher | Source ↗official | |
| UK AISI active safety-research compromise continuationactive_compromise_continuation_rate_pct | #1 / 5 | 0.1 | ↓ lower | Source ↗official |