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 before the December 2025 GPT-5.2 successor.
- Strengths
- Handles complex reasoning, code generation, and long-context tasks across a broad range of applications.
- Best for
- General-purpose AI tasks that require strong reasoning and code understanding, as well as scenarios where large context windows help with long documents or codebases.
- Limitations
- Superseded by GPT-5.2 for general-purpose use; for specialized coding work, GPT-5.1-Codex variants offer better performance.
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 decreased 0.0% out decreased 0.0%
- 90d
- in decreased 0.0% out decreased 0.0%
- 1y
- in decreased 0.0% out decreased 0.0%
- Since launch
- in decreased 0.0% out decreased 0.0%
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 |