OpenAI: GPT-5.1-Codex-Mini
This AI model, OpenAI: GPT-5.1-Codex-Mini, is designed for text and image input processing, allowing it to handle complex tasks that require both modalities. With a context length of 400,000 tokens, it can process extended passages and provide detailed responses. Additionally, this model supports tools integration and reasoning capabilities. When considering which AI model to use, OpenAI: GPT-5.1-Codex-Mini may be a suitable choice for those who need robust image-text processing capabilities at an affordable price point. Its pricing structure is $0.25 per million input tokens and $2.00 per million output tokens, making it an option for projects with limited budgets. While its blended benchmark score of 33.5 places it on par with other models in this space, further evaluation will be necessary to determine its performance across a range of tasks.
Benchmark results
Independent, published benchmarks. Blended score 30.8 across 1 benchmark, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 33.6 |
- Model ID
- openai/gpt-5.1-codex-mini
- Vendor
- openai
- Released
- November 2025
- Tokenizer
- GPT
- Input Modalities
- image, text
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.25/M input and $2.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.23 |
| A month of a busy support chatbot | 5M in / 2M out | $5.25 |
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Quick answers
- How much does OpenAI: GPT-5.1-Codex-Mini cost?
- $0.25 per million input tokens and $2.00 per million output tokens.
- What is OpenAI: GPT-5.1-Codex-Mini's context window?
- 400,000 tokens, roughly 600 pages of text in a single request.
- Does OpenAI: GPT-5.1-Codex-Mini support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: GPT-5.1-Codex-Mini process images?
- Yes, it accepts image input.