Claude Opus 4.1
v20250805Anthropic
DEPRECATED: Anthropic deprecated Claude Opus 4.1 (claude-opus-4-1-20250805) on 2026-06-05; it will be retired on 2026-08-05 and requests will then fail. Recommended replacement: Claude Opus 4.8. Historically a flagship model with state-of-the-art reasoning, ASL-3 safety level, and exceptional performance on complex tasks.
Trust Vector Analysis
Dimension Breakdown
🚀Performance & Reliability+
Highest reasoning capability among all models. Best for extremely complex, mission-critical tasks requiring maximum intelligence.
Coding benchmarks and real-world engineering tasks
PhD-level reasoning and mathematics benchmarks
Comprehensive knowledge testing
Internal consistency testing
Real-world API latency measurements
95th percentile measurements
Official specification
Historical uptime data
🛡️Security+
Industry-leading security with ASL-3 safety classification. Best-in-class for high-risk applications.
OWASP LLM security testing
Adversarial prompt testing
Privacy policy and data handling review
Safety testing across harmful content
API security feature review
🔒Privacy & Compliance+
Exceptional privacy with zero retention and HIPAA eligibility. Best for highly regulated industries.
Enterprise documentation review
Privacy policy analysis
Terms of service review
Data protection capabilities review
Certification verification
Data handling practices review
👁️Trust & Transparency+
Excellent transparency with superior explainability. ASL-3 classification demonstrates commitment to safety and transparency.
Reasoning transparency evaluation
Factual accuracy testing
Bias benchmarks and testing
Qualitative confidence assessment
Documentation completeness review
Public disclosure review
Safety mechanism analysis
⚙️Operational Excellence+
Deprecated 2026-06-05 with retirement on 2026-08-05; migration target is Claude Opus 4.8 ($5/$25, a 67% price cut vs Opus 4.1's $15/$75). Versioning and ecosystem scores reduced to reflect deprecation.
API design review
SDK quality assessment
Versioning policy review
Observability tools review
Support quality assessment
Ecosystem analysis
License terms review
- +Highest reasoning capability (GPQA Diamond 73.4%)
- +ASL-3 safety classification - industry-leading security
- +Zero data retention with HIPAA eligibility
- +Best for mission-critical, complex tasks requiring maximum intelligence
- +200K context window for large-scale analysis
- +Superior explainability and reasoning transparency
- !DEPRECATED 2026-06-05; retires 2026-08-05 — migrate to Claude Opus 4.8 (claude-opus-4-8) before then
- !Highest latency (~2.1s p50) and cost among evaluated models
- !Premium pricing ($15/$75 per 1M tokens)
- !Overkill for simple tasks - use Sonnet for better value
- !Limited vision capabilities
- !Longer response times may not suit real-time applications
Use Case Ratings
code generation
Exceptional for complex software architecture and system design in its era. Deprecated — migrate to Opus 4.8.
customer support
Excellent quality but higher latency and cost than alternatives. Best for premium support requiring maximum empathy.
content creation
Outstanding for long-form, complex content requiring deep thinking. Natural, engaging writing.
data analysis
Best-in-class for complex analytical tasks in its era. Exceptional at multi-step reasoning and insight generation.
research assistant
Superior for academic and professional research. Exceptional synthesis and critical analysis.
legal compliance
Best for legal work requiring maximum accuracy and privacy in its era. HIPAA eligible with zero retention.
healthcare
Top choice for healthcare in its era with HIPAA eligibility and ASL-3 safety. Maximum privacy and accuracy.
financial analysis
Exceptional for complex financial modeling and risk analysis. Superior quantitative reasoning.
education
Outstanding for advanced education with detailed explanations and Socratic teaching.
creative writing
Excellent for sophisticated creative projects. Strong narrative structure and character depth.