OpenAI o1
v20250915OpenAI
DEPRECATED: o1 variants and o1-pro shut down in the API on 2026-10-23; already removed from ChatGPT (o1-preview/o1-mini removed in 2025). Migration target is GPT-5.5. Historically an advanced reasoning model (57.1% SWE-bench, 79.2% HumanEval) with extended chain-of-thought reasoning.
Trust Vector Analysis
Dimension Breakdown
🚀Performance & Reliability+
Exceptional reasoning capabilities with extended chain-of-thought. Best for complex problem-solving requiring deep thinking. Higher latency due to reasoning overhead.
Industry-standard coding benchmarks measuring real-world software engineering tasks
Competition-level reasoning benchmarks requiring extended chain-of-thought
Comprehensive knowledge testing across domains
Internal testing with repeated prompts at various temperature settings
Median latency for API requests with standard prompt sizes
95th percentile response time across diverse workloads
Official specification from provider
Historical uptime data from official status page
🛡️Security+
Strong security posture with enhanced reasoning-based safety. Good protection against common attacks.
Testing against OWASP LLM01 prompt injection attacks
Testing against adversarial prompt datasets
Analysis of privacy policies and data handling practices
Comprehensive safety testing across harmful content categories
Review of API security features and best practices
🔒Privacy & Compliance+
Good privacy posture with SOC 2 certification. 30-day minimum retention for safety monitoring.
Review of enterprise documentation and privacy policies
Analysis of privacy policy and data usage terms
Review of terms of service and data retention policies
Review of data protection capabilities and customer responsibilities
Verification of compliance certifications and audit reports
Review of data handling practices
👁️Trust & Transparency+
Excellent explainability via chain-of-thought reasoning. Transparent problem-solving process visible to users.
Evaluation of reasoning transparency and explanation capabilities
Testing on factual QA datasets and real-world usage
Evaluation on bias benchmarks and diverse demographic testing
Assessment of confidence expression in outputs
Review of documentation completeness and clarity
Review of public disclosures about training data
Analysis of built-in safety mechanisms
⚙️Operational Excellence+
Deprecated: API shutdown scheduled 2026-10-23, migration target GPT-5.5. Versioning and ecosystem scores reduced to reflect deprecation.
Review of API design, consistency, and feature completeness
Review of SDK quality, documentation, and maintenance
Review of versioning policy and historical practices
Review of available monitoring tools and metrics
Assessment of documentation, community, and support responsiveness
Analysis of third-party integrations and tools
Review of licensing terms and restrictions
- +Best-in-class reasoning with 78.3% GPQA Diamond
- +Visible chain-of-thought for transparent problem-solving
- +Exceptional mathematical capabilities (83% on AIME)
- +Strong coding performance (57.1% SWE-bench)
- +Excellent for complex analytical and research tasks
- +High explainability via reasoning traces
- !High latency (4.5s p50, 8.2s p95) due to reasoning overhead
- !Not suitable for real-time applications
- !30-day minimum data retention (not ephemeral)
- !Not HIPAA eligible
- !Higher cost due to extended reasoning compute
- !Reasoning overhead may be unnecessary for simple tasks
- !DEPRECATED: removed from ChatGPT; o1 variants and o1-pro API shutdown 2026-10-23 — migrate to GPT-5.5
Use Case Ratings
code generation
Excellent coding with 57.1% SWE-bench and 79.2% HumanEval. Chain-of-thought helps with complex algorithms.
customer support
Good capabilities but high latency (4.5s) may impact customer experience. Better for complex issues.
content creation
Good content generation but reasoning focus may add unnecessary latency for creative tasks.
data analysis
Exceptional analytical capabilities with chain-of-thought reasoning. Best for complex analysis.
research assistant
Outstanding research capabilities with transparent reasoning. Excellent for complex research tasks.
legal compliance
Good reasoning for legal analysis but 30-day retention may be concern for some use cases.
healthcare
Good reasoning but not HIPAA eligible. 30-day retention may be concern for healthcare data.
financial analysis
Outstanding for complex financial modeling and analysis with transparent reasoning.
education
Exceptional for education with visible chain-of-thought. Perfect for teaching problem-solving.
creative writing
Competent but reasoning focus may reduce creative spontaneity. Higher latency for creative tasks.