OpenAI: GPT-5.1
OpenAI's GPT-5.1 is capable of processing text, images, and files, with an impressive context length of 400,000 tokens and robust tools and reasoning support. This model excels in handling diverse input modalities, making it versatile for various applications. Given its blended benchmark score of 60.1 across three independent evaluations, GPT-5.1 is a strong contender but may not outperform all competitors depending on specific use cases. Its pricing at $1.25 per million input tokens and $10.0 per million output tokens makes it less cost-effective compared to models with similar capabilities, potentially limiting its appeal for budget-conscious users.
Benchmark results
Independent, published benchmarks. Blended score 60.1 across 3 benchmarks, last refreshed 2026-07-21. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 60.8 |
| AI Index Coding | software engineering tasks | 81.5 |
| AI Index Agentic | multi-step tool-using tasks | 34.7 |
- Model ID
- openai/gpt-5.1
- Vendor
- openai
- Released
- November 2025
- Tokenizer
- GPT
- Input Modalities
- image, text, file
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $1.25/M input and $10.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.05 |
| Classify 1,000 customer emails | 500k in / 50k out | $1.12 |
| A month of a busy support chatbot | 5M in / 2M out | $26.25 |
Category rankings
Where OpenAI: GPT-5.1 places across the 6 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #19 | OCR / Document ParsingData · of 25 ranked | 142 |
| #19 | Table Extraction from PDFsData · of 25 ranked | 142 |
| #24 | Diagram ExtractionVision · of 25 ranked | 143 |
| #25 | Frontend Component DesignCode · of 25 ranked | 139 |
| #25 | CSV / Spreadsheet CleanupData · of 25 ranked | 148 |
| #25 | Chart & Graph ReadingVision · of 25 ranked | 144 |
Similar models
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OpenAI: GPT-5.6 Luna
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OpenAI: GPT-5.6 Terra
OpenAI: GPT-5.4 Nano
OpenAI: GPT-5.4 Mini
Quick answers
- How much does OpenAI: GPT-5.1 cost?
- $1.25 per million input tokens and $10.00 per million output tokens.
- What is OpenAI: GPT-5.1's context window?
- 400,000 tokens, roughly 600 pages of text in a single request.
- Does OpenAI: GPT-5.1 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: GPT-5.1 process images?
- Yes, it accepts image input.