GPT-5.1
OpenAI · Multimodal · Released Nov 2025
GPT-5.1 is OpenAI's general-purpose reasoning model with a 400k token context window, released in November 2025 as part of the GPT-5 generation.
- Strengths
- Handles a wide range of tasks across reasoning, analysis, coding, and generation with solid performance across domains.
- Best for
- Real-time API workloads requiring general-purpose capability and large context windows; for batch processing, use GPT-5.1 (batch).
- Limitations
- Superseded by GPT-5.2 released in December 2025, which offers improved reasoning capabilities; for specialized coding tasks, consider the GPT-5.1-Codex variants instead.
Input / 1M
$1.25
Output / 1M
$10.00
Cached input / 1M
$0.125
Context window
400K
Price history
Input (solid)Output (dashed)
Price change
- 30d
- in — out —
- 90d
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- 1y
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- Since launch
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Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 13 Jul 2026 | $1.25 | $10.00 | $0.125 | Imported from OpenRouter | openrouter.ai |
| 11 Jun 2026 | $1.25 | $10.00 | $0.13 | Imported from OpenRouter | openrouter.ai |