claude-opus-5-5
Auto-routeranthropic/claude-opus-5-5
Context
1M
Max output
128K
Input / 1M
$4.00
Output / 1M
$20.00
Cached / 1M
$0.20
Cutoff
Jun 2026
About this model
Claude Opus 5.5 is Anthropic's recommended default model for long-running agentic coding and knowledge work. 1M context window with adaptive thinking (always on), default effort medium.
Best suited for
- Long-running agentic coding
- Knowledge work
- Long-context analysis
- Advanced reasoning tasks
Built-in tools
Hosted by the gateway — enable them per request without wiring your own endpoint.
Capabilities
Vision
Accepts images alongside text in the same message.
Tools
Native function calling, so agents can invoke your endpoints.
System prompt
Honours a dedicated system role, separate from the user turn.
Supported parameters
max_tokensThe maximum number of tokens to generate before stopping.
stop_sequencesCustom text sequences that will cause the model to stop generating.
streamSends the response in real-time as it is being generated.
tool_choiceDecides whether to use tools or just the model for generating responses.
toolsLists tool definitions or capabilities available to the model.
Use this model
OpenAI-SDK compatible, with gateway fallback and routing across providers.
Other Anthropic models
| Model | Context | Max output | Input | Output | Capabilities |
|---|---|---|---|---|---|
| claude-haiku-5-5 Chat | 1M | 128K | $0.10 | $0.50 | Vision, Tools, System prompt |
| claude-sonnet-5-5 Chat | 1M | 128K | $2.00 | $10.00 | Vision, Tools, System prompt |
| claude-fable-5-1 Chat | 1M | 128K | $10.00 | $50.00 | Vision, Files, Tools, System prompt, Reasoning |
| claude-sonnet-5 Chat | 1M | 128K | $2.00 | $10.00 | Vision, Tools, System prompt |
| claude-opus-5 Chat | 1M | 128K | $5.00 | $25.00 | Vision, Tools, System prompt |
| claude-fable-5 Chat | 1M | 128K | $10.00 | $50.00 | Vision, Tools, System prompt |
| claude-opus-4-8 Chat | 1M | 128K | $5.00 | $25.00 | Vision, Files, Tools, System prompt, Reasoning |
| claude-opus-4-7 Chat | 1M | 128K | $5.00 | $25.00 | Vision, Files, Tools, System prompt, Reasoning |
| claude-sonnet-4-6 Chat | 1M | 128K | $3.00 | $15.00 | Vision, Files, Tools, System prompt |
| claude-opus-4-6 Chat | 1M | 128K | $5.00 | $25.00 | Vision, Files, Tools, System prompt |
| claude-opus-4-5-20251101 Chat | 200K | 64K | $5.00 | $25.00 | Vision, Files, Tools, System prompt |
| claude-haiku-4-5-20251001 Chat | 200K | 64K | $1.00 | $5.00 | Vision, Files, Tools, System prompt |
Pricing & provider details
Anthropic
anthropic/claude-opus-5-5
- Input · per 1M
- $4.00
- Output · per 1M
- $20.00
- Cached input · per 1M
- $0.20
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Knowledge cutoff
- Jun 2026
- Auto-router
- Supported
Start building today
Route claude-opus-5-5 — and every other model in the catalogue — through one endpoint, with failover built in.