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The AI Model Price Index

GPT-5.1 Chat

by Azure · family gpt-codex · listed Nov 2025RTV

Speech generation model for controllable voice, narration, and audio delivery

Current rates USD per 1M tokens

Input$1.25
Output$10.00
Cache read$0.125
Cache write—

Against the market

Input price vs. maker flagships ($/1M tokens)
DeepSeek V4 FlashDeepSeek V4 Flash: $0.14 per 1M tokens$0.14Qwen3.7 PlusQwen3.7 Plus: $0.50 per 1M tokens$0.50GPT-5.1 ChatGPT-5.1 Chat: $1.25 per 1M tokens$1.25Grok 4.3Grok 4.3: $1.25 per 1M tokens$1.25Gemini 3.5 FlashGemini 3.5 Flash: $1.50 per 1M tokens$1.50Mistral Medium (latest)Mistral Medium (latest): $1.50 per 1M tokens$1.50Claude Sonnet 5Claude Sonnet 5: $2.00 per 1M tokens$2.00GPT-5.5 ProGPT-5.5 Pro: $30.00 per 1M tokens$30.00
Output price vs. maker flagships ($/1M tokens)
DeepSeek V4 FlashDeepSeek V4 Flash: $0.28 per 1M tokens$0.28Grok 4.3Grok 4.3: $2.50 per 1M tokens$2.50Qwen3.7 PlusQwen3.7 Plus: $3.00 per 1M tokens$3.00Mistral Medium (latest)Mistral Medium (latest): $7.50 per 1M tokens$7.50Gemini 3.5 FlashGemini 3.5 Flash: $9.00 per 1M tokens$9.00GPT-5.1 ChatGPT-5.1 Chat: $10.00 per 1M tokens$10.00Claude Sonnet 5Claude Sonnet 5: $10.00 per 1M tokens$10.00GPT-5.5 ProGPT-5.5 Pro: $180 per 1M tokens$180

On the record

Model id
gpt-5.1-chat
Context window
128K tokens
Max output
16K tokens
Input modalities
text, image, audio
Output modalities
text, image, audio
Reasoning
yes
Tool calls
yes
Open weights
no
Knowledge cutoff
Sep 2024
Released
2025-11-14
Last updated
2025-11-14
Provider docs
learn.microsoft.com/en-us/azure/ai-services/openai/concepts/models

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