claude-opus-4-5-thinking
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Capabilities
Modalities
Quick stats
Performance
Supported parameters
| Parameter | Always | Default |
|---|---|---|
| frequency_penalty | — | (do not send) |
| include_reasoning | — | |
| max_tokens | — | |
| presence_penalty | — | (do not send) |
| reasoning | — | |
| repetition_penalty | — | (do not send) |
| response_format | — | — |
| stop | — | |
| structured_outputs | — | — |
| temperature | (do not send) | |
| tool_choice | — | |
| tools | — | |
| top_k | — | (do not send) |
| top_p | — | (do not send) |
| verbosity | — | — |
Pricing
| Input price | $3.00 · 1M tokens |
| Output price | $15.00 · 1M tokens |
| Context window | 200K tokens |
| Compatible endpoints | openai, anthropic |
| Vendor | Anthropic |
Call claude-opus-4-5-thinking from your code
Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.
curl https://api.unorouter.ai/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-opus-4-5-thinking",
"messages": [{"role": "user", "content": "Hello!"}]
}'Frequently asked questions
How much does claude-opus-4-5-thinking cost per 1M tokens?
Input is priced at $3.00 per 1M tokens, output at $15.00 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access claude-opus-4-5-thinking via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=claude-opus-4-5-thinking. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
What is the context window of claude-opus-4-5-thinking?
claude-opus-4-5-thinking supports a context window of 200K tokens, shared between your prompt and the model's response.
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Try claude-opus-4-5-thinking now
Create an API key and start making requests in under a minute.