Claude Opus 4.5 is Anthropic's advanced reasoning model built for complex coding, agentic workflows, and long-running tasks with improved multimodal performance, efficiency, and reliability.
OffRail routes requests to the best providers that are able to handle your prompt size and parameters.
Claude Opus 4.5 is Anthropic's advanced reasoning model built for complex coding, agentic workflows, and long-running tasks with improved multimodal performance, efficiency, and reliability. You can access it through OffRail's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for Claude Opus 4.5 on OffRail starts at $5.00 per million input tokens and $25.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
Claude Opus 4.5 supports a context window of up to 200,000 tokens on its largest provider deployment.
Claude Opus 4.5 is served by Anthropic, AWS Bedrock, Vertex AI (Anthropic) through OffRail. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. Claude Opus 4.5 supports both tool (function) calling and strict JSON output schema (upstream-enforced) through OffRail.
Claude Opus 4.5 was released on November 24, 2025.
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
Claude Sonnet 4.6
1,000,000 context$3.00 in / $15.00 out per 1M