Ways to buy 3
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 Anthropic APIThe lab's own API · cached $0.3 | $3 | $15 | $3 / $15List price | $0.3 | List price |
 AWS BedrockDefault region · cached $0.3 | $3 | $15 | $3 / $15Same as list | $0.3 | Same as list |
| AWS Bedrock eu-west-1 · cached $0.3 | $3 | $15 | $3 / $15Same as list | $0.3 | Same as list |
USD per 1M tokens. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $600.00 direct.
Helicone$600.00+0%
Kong AI Gateway$600.00+0%
LiteLLM$600.00+0%
Vercel AI Gateway$600.00+0%
Cloudflare AI Gateway$630.00+5%
Requesty$630.00+5%
Eden AI$633.00+5.5%
OpenRouter$633.00+5.5%
No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | ||||||
|---|---|---|---|---|---|---|---|
| Claude Opus 5.5 Anthropic · 1M | $4 | $20 | $4 / $20 | $8 | 1M | Lab list price | · |
| Claude Fable 5.1 Anthropic · 1M | $10 | $50 | $10 / $50 | $20 | 1M | Lab list price | · |
| Claude Opus 5 Anthropic · 1M | $5 | $25 | $5 / $25 | $10 | 1M | Lab list price | · |
| Claude Sonnet 5 Anthropic · 1M | $2 | $10 | $2 / $10 | $4 | 1M | Lab list price | · |
 GPT-5.6 SolOpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · |
| GPT-5.5 OpenAI · 1.05MCheapest: $5.63 on OpenAI (flex) | $5 | $30 | $5 / $30 | $11.3 | 1.05M | $5.63 on OpenAI (flex) | · |
 Gemini 3.1 Pro PreviewGoogle · 1MCheapest: $2.25 on Google Vertex AI (global-flex) | $2 | $12 | $2 / $12 | $4.5 | 1M | $2.25 on Google Vertex AI (global-flex) | · |
 Qwen3.8 Max (0902)Qwen (Alibaba) · 1M | $2 | $6 | $2 / $6 | $3 | 1M | Lab list price | · |
About Claude Sonnet 4
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability.
Takes image, text, files in and returns text. First listed Jun 5, 2025. Up to 64K output tokens. Blended price $6 per 1M tokens at 3 input to 1 output. Model id claude-sonnet-4.
Price history
List price since Jun 5, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does Claude Sonnet 4 cost?
$3 per million input tokens and $15 per million output tokens, with cached input at $0.3.
What is the context window of Claude Sonnet 4?
200K tokens, with up to 64K tokens of output.
Where is Claude Sonnet 4 cheapest?
Of 3 routes tracked, AWS Bedrock is cheapest at $3 input and $15 output per million tokens.
Sources: OpenRouter's public model catalog and each provider's own pricing page, read every morning at 05:00 UTC; gateway fees re-read every Monday. List prices: your contract may differ. Logos via logo.dev; trademarks belong to their owners.