OpenAI: GPT-5.1-Codex-Mini
Analysis Summary
OpenAI: GPT-5.1-Codex-Mini is developed by OpenAI. It was released in November 2025. On our leaderboard it earns Professional-tier status, ranking #10 of 565 models in our overall business-suitability ranking. For raw reasoning ability it ranks #68 of 374, putting it in the top quartile for overall intelligence.
For engineering teams, OpenAI: GPT-5.1-Codex-Mini is a standout coder, ranking #63 of 311 on our coding index for code generation, refactoring, and debugging. It also ranks #96 of 286 for agentic, multi-step tasks ā the autonomous, tool-driven workflows that underpin business automation. Its 400K-token context window is larger than 85% of the models we list, suiting long documents, large codebases, and retrieval-heavy workloads. Crucially for business adoption, OpenAI: GPT-5.1-Codex-Mini combines tool use, function calling, vision input, and step-by-step reasoning in a single model, letting teams consolidate several use cases instead of stitching together multiple services.
At $0.250 input and $2.00 output per 1M tokens, OpenAI: GPT-5.1-Codex-Mini is cost-efficient for everyday workloads so it scales comfortably across routine production traffic. OpenAI: GPT-5.1-Codex-Mini is a dependable pick for businesses that need strong, well-rounded performance without paying frontier prices.
Editorial notes
GPT-5.1-Codex-Mini from OpenAI offers near-flagship coding performance at $0.25/1M input, with vision, tool use, and a 400K context window making it an outstanding value for technical business tasks.
Assessed May 31, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How OpenAI: GPT-5.1-Codex-Mini compares
OpenAI: GPT-5.1-Codex-Mini ranks #68 of 374 AI models we track for overall intelligence, #63 of 311 for coding, #96 of 286 for agentic tasks. Its 400K-token context window is larger than 85% of the models we list. At $0.25 per million input tokens it is cheaper than 47% of comparable models.
About OpenAI: GPT-5.1-Codex-Mini
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 | 100,000 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, refreshed every 30 minutes.
Leaderboard Categories
External Resources
Frequently asked questions about OpenAI: GPT-5.1-Codex-Mini
How much does OpenAI: GPT-5.1-Codex-Mini cost?
OpenAI: GPT-5.1-Codex-Mini costs $0.25 per million input tokens and $2.00 per million output tokens.
What is the context window of OpenAI: GPT-5.1-Codex-Mini?
OpenAI: GPT-5.1-Codex-Mini has a context window of 400,000 tokens (400K).
Is OpenAI: GPT-5.1-Codex-Mini good for coding?
On our coding benchmark index, OpenAI: GPT-5.1-Codex-Mini ranks #63 of 311 models, placing it in the top quartile of the field for code generation and debugging.
What can OpenAI: GPT-5.1-Codex-Mini do?
OpenAI: GPT-5.1-Codex-Mini supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-5.1-Codex-Mini?
OpenAI: GPT-5.1-Codex-Mini is developed by OpenAI and was released on November 13, 2025.
