Tuesday, July 7, 2026 · No. 345Prices synced 1 hour ago
All·AI·Model

The AI Model Price Index

Claude Sonnet 4.5

by Abacus · family claude-sonnet · listed Sep 2025RTV

Balanced Claude model for coding, analysis, agent workflows, and cost control

Current rates USD per 1M tokens

Input$3.00
Output$15.00
Cache read—
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$0.50Grok 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$2.00Claude Sonnet 4.5Claude Sonnet 4.5: $3.00 per 1M tokens$3.00GPT-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$9.00Claude Sonnet 5Claude Sonnet 5: $10.00 per 1M tokens$10.00Claude Sonnet 4.5Claude Sonnet 4.5: $15.00 per 1M tokens$15.00GPT-5.5 ProGPT-5.5 Pro: $180 per 1M tokens$180

On the record

Model id
claude-sonnet-4-5-20250929
Context window
200K tokens
Max output
64K tokens
Input modalities
text, image, pdf
Output modalities
text
Reasoning
yes
Tool calls
yes
Open weights
no
Knowledge cutoff
Jul 2025
Released
2025-09-29
Last updated
2025-09-29
Provider docs
abacus.ai/help/api

Back of the envelope

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