OpenAI: GPT-5.1-Codex-Mini
Analysis Summary
OpenAI: GPT-5.1-Codex-Mini sits in the Professional tier on our leaderboard, ranked #50 of 525 published models on overall intelligence. At $0.250 input and $2.00 output per 1M tokens, it is among the most expensive on the market. It offers a generous context window for extended reasoning and code review and supports tool use, function calling, vision, and reasoning.
Editorial notes
GPT-5.1-Codex-Mini from OpenAI offers a compelling balance of solid reasoning and coding capability at a much lower price point, with vision support and a 400K context window ā a strong option for cost-conscious businesses needing reliable technical performance.
Assessed April 23, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Capabilities
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does OpenAI: GPT-5.1-Codex-Mini stack up?
Compare side-by-side with other professional models.
Model Information
| OpenRouter ID |
openai/gpt-5.1-codex-mini
|
| Provider | openai |
| Release Date | November 13, 2025 |
| Context Length | 400,000 tokens |
| Max Completion | 128,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.25 | $0.000250 |
| Output | $2.00 | $0.002000 |
Live Performance
Live endpoint metrics ā refreshed every 30 minutes.
