Claude Opus 4.1

Updated Opus with vision support and 32K output.

claude-opus-4-1-20250805
STABLEGet StartedView uptime
200,000 context
Released August 5, 2025
Starting at $15.00/M input tokens
Starting at $75.00/M output tokens
Streaming
Vision
Tools
Reasoning
Structured JSON
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All Providers for Claude Opus 4.1

OffRail routes requests to the best providers that are able to handle your prompt size and parameters.

AWS Bedrock
Context: 200k
Deprecated since Jul 8, 2026
Input
$15
/M tokens
Cache Read
$1.5
/M tokens
Output
$75
/M tokens
Cache Write 5m
$18.75
/M tokens
Cache Write 1h
$18.75
/M tokens
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Frequently asked questions

What is Claude Opus 4.1?

Updated Opus with vision support and 32K output. You can access it through OffRail's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does Claude Opus 4.1 cost?

Pricing for Claude Opus 4.1 on OffRail starts at $15.00 per million input tokens and $75.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of Claude Opus 4.1?

Claude Opus 4.1 supports a context window of up to 200,000 tokens on its largest provider deployment.

Which providers serve Claude Opus 4.1?

Claude Opus 4.1 is served by AWS Bedrock through OffRail. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does Claude Opus 4.1 support tool calling and structured outputs?

Yes. Claude Opus 4.1 supports both tool (function) calling and strict JSON output schema (upstream-enforced) through OffRail.

When was Claude Opus 4.1 released?

Claude Opus 4.1 was released on August 5, 2025.