GP
GPT-5.1 Pro
Release date: 2025-11-20Updated: 2026-06-15 07:18:15.747552
Parameters
Not disclosed
Context length
400K
Chinese support
Supported
Reasoning ability
GPT-5.1 Pro is an AI model published by OpenAI, released on 2025-11-20, for Reasoning model, and 400K context length.
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
GPT-5.1 Pro
Model basics
Reasoning traces
Supported
Thinking modes
Thinking Level · Medium (Default)Thinking Level · LowThinking Level · HighThinking Level · Extra-High
Context length
400K tokens
Max output length
No data
Model type
Reasoning model
Modality (in / out)
Text, Image → Text
Release date
2025-11-20
Model file size
No data
MoE architecture
No
Total params / Active params
No data / N/A
Knowledge cutoff
No data
GPT-5.1 Pro
Open source & experience
Code license
Proprietary
Weights license
Proprietary
GitHub repo
GitHub link unavailable
Hugging Face
Hugging Face link unavailable
Live demo
No live demo
GPT-5.1 Pro
Official resources
Paper
DataLearnerAI blog
No blog post yet
GPT-5.1 Pro
API details
API speed
3/5
💡Default unit: $/1M tokens. If vendors use other units, follow their published pricing.
Standard
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $15.00/ 1M | $120.00/ 1M |
Batch
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $7.50/ 1M | $60.00/ 1M |
GPT-5.1 Pro
Benchmark Results
No benchmark data to show.
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GPT-5.1 Pro
Publisher
OpenAI
View publisher details GPT-5.1 Pro
Model Overview
GPT-5.1 Pro is an AI model published by OpenAI, released on 2025-11-20, for Reasoning model, and 400K context length.
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