Claude Sonnet 5
29 values about Claude Sonnet 5 from 1 document, in 6 metric families. In each family, values from its own document come first.
- Developer
- Anthropic
- Release date
- 30 Jun 2026The date of its first card in the dataset, the Claude Sonnet 5 System Card.
- Availability
- Public
- Its own document
- Claude Sonnet 5 System Card · 30 Jun 2026
- Also reported in
- No other document reports a value about it
Data as of 26 Sep 2026 · Dataset v0.1 · Methodology v0.1 · Changelog
Values by metric family
Each value as the document printed it. Select a value for its source, its checks and its history.
KeyVerifiedUnverifiedDisputedCorrected read off a figure or stated in wordsA value opens its source and history.
M1 · Evaluation awareness 1 value
| Evaluation and metric | Value | Document |
|---|---|---|
| From its own documentClaude Sonnet 5 System Card · 30 Jun 2026 | ||
| Automated behavioral auditShare of transcripts verbalizing eval awareness | Claude Sonnet 5 System Card30 Jun 2026 | |
M3 · Sabotage and sandbagging 2 values
| Evaluation and metric | Value | Document |
|---|---|---|
| From its own documentClaude Sonnet 5 System Card · 30 Jun 2026 | ||
| Internal monitoringSandbagging instances detected | Claude Sonnet 5 System Card30 Jun 2026 | |
| SHADE-Arena / Minimal-LinuxBenchStealth success rate | Claude Sonnet 5 System Card30 Jun 2026 | |
M5 · Honesty and hallucination 1 value
| Evaluation and metric | Value | Document |
|---|---|---|
| From its own documentClaude Sonnet 5 System Card · 30 Jun 2026 | ||
| MASKLying rate under pressure | Claude Sonnet 5 System Card30 Jun 2026 | |
M7 · Harmful compliance and over-refusal 11 values
| Evaluation and metric | Value | Document |
|---|---|---|
| From its own documentClaude Sonnet 5 System Card · 30 Jun 2026 | ||
| Child safety multi-turnAppropriate response rateCondition: API | Claude Sonnet 5 System Card30 Jun 2026 | |
| Child safety multi-turnAppropriate response rateCondition: claude.ai | Claude Sonnet 5 System Card30 Jun 2026 | |
| Malicious Claude Code useRefusal rate, malicious requests | Claude Sonnet 5 System Card30 Jun 2026 | |
| Malicious Claude Code useSuccess rate, dual-use & benign | Claude Sonnet 5 System Card30 Jun 2026 | |
| Malicious computer useRefusal rate | Claude Sonnet 5 System Card30 Jun 2026 | |
| Single-turn benign requestsOver-refusal rateCondition: claude.ai system prompt | Claude Sonnet 5 System Card30 Jun 2026 | |
| Single-turn benign requestsOver-refusal rateCondition: no system prompt; API | Claude Sonnet 5 System Card30 Jun 2026 | |
| Single-turn violative requestsHarmless response rateCondition: claude.ai system prompt | Claude Sonnet 5 System Card30 Jun 2026 | |
| Single-turn violative requestsHarmless response rateCondition: no system prompt; API | Claude Sonnet 5 System Card30 Jun 2026 | |
| Suicide/self-harm multi-turnAppropriate response rateCondition: API | Claude Sonnet 5 System Card30 Jun 2026 | |
| Suicide/self-harm multi-turnAppropriate response rateCondition: claude.ai | Claude Sonnet 5 System Card30 Jun 2026 | |
M9 · Prompt injection 4 values
| Evaluation and metric | Value | Document |
|---|---|---|
| From its own documentClaude Sonnet 5 System Card · 30 Jun 2026 | ||
| Browser use prompt injectionAttack success rateCondition: without new browser safeguards | Claude Sonnet 5 System Card30 Jun 2026 | |
| Coding prompt injection (adaptive attacker)Attack success rateCondition: extended thinking | Claude Sonnet 5 System Card30 Jun 2026 | |
| Computer-use prompt injectionAttack success rateCondition: extended thinking | Claude Sonnet 5 System Card30 Jun 2026 | |
| Live bug bounty prompt injectionShare of unique attacks succeeding | Claude Sonnet 5 System Card30 Jun 2026 | |
M10 · Dangerous capabilities and risk determinations 10 values
| Evaluation and metric | Value | Document |
|---|---|---|
| From its own documentClaude Sonnet 5 System Card · 30 Jun 2026 | ||
| AI R&D kernel taskBest speedup | Claude Sonnet 5 System Card30 Jun 2026 | |
| AI R&D LLM training taskAverage speedup | Claude Sonnet 5 System Card30 Jun 2026 | |
| AI R&D novel compiler taskPass rate | Claude Sonnet 5 System Card30 Jun 2026 | |
| CyberGymTargeted vuln reproduction rate | Claude Sonnet 5 System Card30 Jun 2026 | |
| DNA synthesis screening evasionPathogens with viable evasionCondition: of 10 pathogens | Claude Sonnet 5 System Card30 Jun 2026 | |
| ExploitBenchMean flags capturedCondition: AutoNudge arm | Claude Sonnet 5 System Card30 Jun 2026 | |
| Firefox 147 exploitationFull exploit rate | Claude Sonnet 5 System Card30 Jun 2026 | |
| Long-form virology task 1Score | Claude Sonnet 5 System Card30 Jun 2026 | |
| Multimodal virology (VCT)Score | Claude Sonnet 5 System Card30 Jun 2026 | |
| RSP determinationsCB-2 / Autonomy TM2 | Claude Sonnet 5 System Card30 Jun 2026 | |
Risk determinations
The developer's formal decisions about Claude Sonnet 5 under its framework, as printed. Levels from different frameworks do not map onto one another.
| Domain | Level as printed | Framework and document |
|---|---|---|
| Bio/chem | CB-2 not crossed Responsible Scaling Policy Claude Sonnet 5 System Card · 30 Jun 2026 | Responsible Scaling Policy Claude Sonnet 5 System Card · 30 Jun 2026 |
| AI R&D / autonomy | TM2 not applicable Responsible Scaling Policy Claude Sonnet 5 System Card · 30 Jun 2026 | Responsible Scaling Policy Claude Sonnet 5 System Card · 30 Jun 2026 |