OpenAIReleased on Nov 12, 2025

GPT-5.1 Thinking: Benchmarks, Pricing & Context Window

GPT-5.1 Thinking is a language model from OpenAI, released in November 2025, with multimodal input.

GPT-5.1 Thinking is the next iteration of GPT-5, designed with enhanced adaptive reasoning capabilities. Unlike GPT-5.1 Instant, GPT-5.1 Thinking adapts thinking time more precisely to each question, providing more thorough reasoning for

Input
TextImage
Output
Text
Speed
Latency p953.00s
Throughput P9580.0char/s
Cost
$2.22/ 1M · 8:1 in:out
$1.25 in · $10.0 out

GPT-5.1 Thinking pricing

Providers

GPT-5.1 Thinking starts at $1.25 per million input tokens and $10.00 per million output tokens via OpenAI.

ProviderInput $/MOutput $/MMax InputMax OutputLatency p95 sThroughput P95QuantInputOutput
OpenAI logoOpenAI
$1.25$10.00400.0K128.0K
3.00
80 c/s
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GPT-5.1 Thinking API

API access coming soon

GPT-5.1 Thinking will be available through our gateway shortly.

GPT-5.1 Thinking examples

Recent arena outputs from GPT-5.1 Thinking, picked from the highest-ranked matchups.

GPT-5.1 Thinking license

GPT-5.1 Thinking is released under the Proprietary license, which restricts commercial use.

License
Proprietary
Non-commercial

Proprietary license - usage restrictions apply

FAQ

Common questions about GPT-5.1 Thinking.

When was GPT-5.1 Thinking released?

GPT-5.1 Thinking was released on November 12, 2025 by OpenAI. This is the official GPT-5.1 Thinking release date tracked on LLM Stats.

Is GPT-5.1 Thinking available via API?

Yes, GPT-5.1 Thinking is available via API. See the official documentation for authentication and endpoint details. It is served by 1 provider tracked on LLM Stats.

Who created GPT-5.1 Thinking?

GPT-5.1 Thinking was created by OpenAI.

What is the license for GPT-5.1 Thinking?

GPT-5.1 Thinking is released under the Proprietary license.

Is GPT-5.1 Thinking multimodal?

Yes, GPT-5.1 Thinking is multimodal and can accept both text and images as input.

Where can I use GPT-5.1 Thinking?

GPT-5.1 Thinking is available through 1 provider including OpenAI.

Where is the GPT-5.1 Thinking paper or technical report?

GPT-5.1 Thinking has a paper or technical report available at https://openai.com/index/gpt-5-1/. Use that source for architecture, training, release and evaluation details.