Tuesday, July 7, 2026 · No. 345Prices synced within the hour
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The AI Model Price Index

GPT 5.1 Thinking

by Vercel AI Gateway · family gpt · listed Nov 2025RTV

Image model for prompt-driven generation, editing, and visual design workflows

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 ThinkingGPT 5.1 Thinking: $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 ThinkingGPT 5.1 Thinking: $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
openai/gpt-5.1-thinking
Context window
400K tokens
Max output
128K tokens
Input modalities
text, image, pdf
Output modalities
text, image
Reasoning
yes
Tool calls
yes
Open weights
no
Knowledge cutoff
Oct 2024
Released
2025-11-12
Last updated
2025-08-07
Provider docs
github.com/vercel/ai/tree/5eb85cc45a259553501f535b8ac79a77d0e79223/packages/gateway

Back of the envelope

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