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GPT-5.1-Codex-MiniAPI
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Prices update automatically — checked daily against provider list prices.
- $0.69 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 78% of the 192 commercial models tracked here
- 20 of 88 OpenAI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for GPT-5.1-Codex-Mini, measured by Artificial Analysis. Higher is better. Measurement mode: high.
Models at this level cost $1 per 1M tokens (median of 19) — this one costs $0.69.
Cheaper and better on this index: GLM 5.3 Flash · Gemini 3.7 Flash (batch) · GPT-5.6 Luna and 28 more
About this model
GPT-5.1-Codex-Mini is a commercial AI model by OpenAI. The specifications below are tracked automatically: pricing is refreshed daily from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is GPT-5.1-Codex-Mini?
GPT-5.1-Codex-Mini is an AI language model from OpenAI. It is a proprietary model, available through an API. It scores 31.3 on the Artificial Analysis intelligence index.
Is GPT-5.1-Codex-Mini free?
GPT-5.1-Codex-Mini is not free: it costs $0.25 per million input tokens and $2 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is GPT-5.1-Codex-Mini good at?
Independent benchmarks from Artificial Analysis give it GPQA 81.3%, MMLU-Pro 82%, Humanity's Last Exam 18.5%, Long Context Reasoning 65%, LiveCodeBench 83.6%, SciCode 42.6%, AIME 2025 91.7%, IFBench 67.9%, τ²-Bench 62.9%, Terminal-Bench Hard 33.3%. It is particularly used for mathematical reasoning.