GPT-5 Codex: API Pricing, Context Window & Benchmarks
GPT-5 Codex is a language model from OpenAI, released in September 2025.
GPT-5 Codex has been trained specifically for conducting code reviews and finding critical flaws. When reviewing, it navigates your codebase and analyzes code patterns to identify potential security vulnerabilities, performance issues, and
GPT-5 Codex benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
How GPT-5 Codex performs across real-world prompt categories.
Performance by conversation depth
How GPT-5 Codex holds up as conversations get longer.
Quality Tracker
GPT-5 Codex Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Mon Aug 24 2026GPT-5 Codex API
Available from the model provider
GPT-5 Codex has an official provider API. It is not currently routed through the LLM Stats gateway.
Read the official API documentationGPT-5 Codex latency
GPT-5 Codex time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.
GPT-5 Codex examples
Recent arena outputs from GPT-5 Codex, picked from the highest-ranked matchups.
GPT-5 Codex license
GPT-5 Codex is a proprietary model available under its provider's product and API terms, has a knowledge cutoff of September 2024.
- License
- Proprietary
- Hosted access
- Knowledge cutoff
- September 2024
Proprietary license - usage restrictions apply
GPT-5 Codex resources
Official sources for GPT-5 Codex: api documentation, official playground, official launch post.
GPT-5 Codex vs other models
The most-compared alternatives to GPT-5 Codex are Step-3.5-Flash, Claude Opus 4.1, GPT-5. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like GPT-5 Codex
Models ranked just above and below GPT-5 Codex by LLM Stats score.
FAQ
Common questions about GPT-5 Codex.