Anthropicclaude-opus-5-5
anthropic/claude-opus-5-5
featuredreasoningcodingagents
Anthropic claude-opus-5-5: the Opus tier of Claude, Anthropic's most capable line for complex reasoning, agents and software engineering. Text and image input.
Pricing
USD per 1M tokens, billed per token. Cached input applies where the provider caches prompts.
- Input
- $4.00
- Output
- $20.00
- Cached input
- $0.200
Specifications
- Context length
- 1M
- Max output tokens
- —
- Input
- text, image
- Output
- text
- Endpoints
- anthropic, openai
- Released
- Sep 22, 2026
- Alias accepted
- claude-opus-5-5
Example request
curl https://api.nxioai.com/api/v1/chat/completions \
-H "Authorization: Bearer $NXIO_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"anthropic/claude-opus-5-5","messages":[{"role":"user","content":"Hello"}]}'Price history
Every price change opens a new version. Past requests are billed with the version in effect at the time.
| Effective | Until | Input | Output | Cached input | Source |
|---|---|---|---|---|---|
| Oct 6, 2026 | current | $4.00 | $20.00 | $0.200 | sync |