Claude Opus 5.5 is Anthropic's model for long-running agentic coding and knowledge work, with always-on adaptive thinking at a lower price than Claude Opus 5.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
Claude Opus 5.5 is Anthropic's model for long-running agentic coding and knowledge work, with always-on adaptive thinking at a lower price than Claude Opus 5. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for Claude Opus 5.5 on LLM Gateway starts at $4.00 per million input tokens and $20.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
Claude Opus 5.5 supports a context window of up to 1,000,000 tokens on its largest provider deployment.
Claude Opus 5.5 is served by Anthropic through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. Claude Opus 5.5 supports both tool (function) calling and strict JSON output schema (upstream-enforced) through LLM Gateway.
Claude Opus 5.5 was released on September 22, 2026.
Claude Fable 5.1
1,000,000 context$10.00 in / $50.00 out per 1M
Claude Opus 5
1,000,000 context$5.00 in / $25.00 out per 1M
Claude Sonnet 5
1,000,000 context$2.00 in / $10.00 out per 1M
Claude Fable 5
1,000,000 context$10.00 in / $50.00 out per 1M
Claude Opus 4.8
1,000,000 context$5.00 in / $25.00 out per 1M
Claude Opus 4.7
1,000,000 context$5.00 in / $25.00 out per 1M