OpenAIReleased on Nov 12, 2025

GPT-5.1 Codex High: Benchmarks, Pricing & Context Window

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

GPT-5.1 Codex High is optimized for complex coding tasks with enhanced reasoning capabilities. This variant provides deep code analysis, architectural planning, and sophisticated problem-solving for challenging programming tasks.

Input
TextImage
Output
Text
Speed
Latency p953.50s
Throughput P9550.0char/s
Cost
$2.22/ 1M · 8:1 in:out
$1.25 in · $10.0 out

GPT-5.1 Codex High pricing

Providers

GPT-5.1 Codex High 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
3.50
50 c/s
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GPT-5.1 Codex High API

API access coming soon

GPT-5.1 Codex High will be available through our gateway shortly.

GPT-5.1 Codex High examples

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

GPT-5.1 Codex High license

GPT-5.1 Codex High 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 Codex High.

When was GPT-5.1 Codex High released?

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

Is GPT-5.1 Codex High available via API?

Yes, GPT-5.1 Codex High 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 Codex High?

GPT-5.1 Codex High was created by OpenAI.

What is the license for GPT-5.1 Codex High?

GPT-5.1 Codex High is released under the Proprietary license.

Is GPT-5.1 Codex High multimodal?

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

Where can I use GPT-5.1 Codex High?

GPT-5.1 Codex High is available through 1 provider including OpenAI.

Where is the GPT-5.1 Codex High paper or technical report?

GPT-5.1 Codex High 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.