Ways to buy 6
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 Anthropic APIThe lab's own API · cached $0.5 | $5 | $25 | $5 / $25List price | $0.5 | List price |
 AWS BedrockDefault region · cached $0.5 | $5 | $25 | $5 / $25Same as list | $0.5 | Same as list |
 Azure AI Foundryglobal · cached $0.5 | $5 | $25 | $5 / $25Same as list | $0.5 | Same as list |
| Claude Platform on AWS Default region · cached $0.5 | $5 | $25 | $5 / $25Same as list | $0.5 | Same as list |
 Google Vertex AIglobal · cached $0.5 | $5 | $25 | $5 / $25Same as list | $0.5 | Same as list |
| AWS Bedrock eu-west-1 · cached $0.55 | $5.5 | $27.5 | $5.5 / $27.5+10% vs list | $0.55 | +10% vs list |
USD per 1M tokens; batch $2.5 in, $12.5 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $1,000 direct.
Helicone$1,000+0%
Kong AI Gateway$1,000+0%
LiteLLM$1,000+0%
Vercel AI Gateway$1,000+0%
Cloudflare AI Gateway$1,050+5%
Requesty$1,050+5%
Eden AI$1,055+5.5%
OpenRouter$1,055+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-6 AstraOpenAI · 1.05MCheapest: $10 on OpenAI (flex) | $10 | $50 | $10 / $50 | $20 | 1.05M | $10 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) | · |
| GPT-5.6 Terra OpenAI · 1.05MCheapest: $2.25 on OpenAI (flex) | $2 | $12 | $2 / $12 | $4.5 | 1.05M | $2.25 on OpenAI (flex) | · |
About Claude Opus 4.5
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use.
Takes files, image, text in and returns text. First listed Nov 30, 2025. Up to 64K output tokens. Blended price $10 per 1M tokens at 3 input to 1 output. Overall score 7 on leadersboard.fru.dev (rank 23). Model id claude-opus-4-5.
Price history
List price since Nov 30, 2025, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does Claude Opus 4.5 cost?
$5 per million input tokens and $25 per million output tokens, with cached input at $0.5, or $2.5 and $12.5 through the Batch API.
What is the context window of Claude Opus 4.5?
200K tokens, with up to 64K tokens of output.
Where is Claude Opus 4.5 cheapest?
Of 6 routes tracked, AWS Bedrock is cheapest at $5 input and $25 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.