Model detail
claude-opus-4-8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for highly autonomous agents, long-horizon agentic work, knowledge work, and memory-driven tasks where coherence over extended sessions matters. It is particularly strong on multi-step reasoning, complex coding, and end-to-end project orchestration - large codebases, multi-stage debugging, and long-running asynchronous agent pipelines. Beyond coding, it handles knowledge work such as drafting documents, building presentations, and analyzing data, maintaining quality across very long outputs.
Model specs
- Context length
- 1M
- Max output
- 128K
- I/O modalities
- Text / Image
- Released
- 2026-05
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API endpoints
One MixRoute gateway, OpenAI-compatible
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Anthropic Messages
/v1/messagesPOST -
OpenAI-compatible
/v1/chat/completionsPOST
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Pricing
Flat rate, unit: /1M Tokens
Input
$5.0000 /1M Tokens
Completion
$25.0000 /1M Tokens
Cache read
$0.5000 /1M Tokens
Cache creation
$6.2500 /1M Tokens
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Selection summary
Quickly judge whether it fits your workload
What is this model good for?
Highly autonomous agents and long-horizon knowledge work
Use Claude Opus 4.8 for autonomous agents, memory-driven tasks, and end-to-end project orchestration. It supports text/image/file inputs with a 1M-token context window and maintains coherence across extended sessions.
What should you check before using it?
Test long-horizon agent performance
Opus 4.8 excels at multi-step reasoning, complex coding, and long-running pipelines. Test your multi-stage debugging and asynchronous agent workflows to confirm the model meets your needs.
Why use it through MixRoute?
Use the compatible endpoint with stable model ID
Use the confirmed compatible endpoint with model ID claude-opus-4-8 through MixRoute.
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Token cost estimator
Live estimate from this page's pricing, not an actual bill
Share of the same prefix read repeatedly, up to 100%
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FAQ
Claude Opus 4.8 is Anthropic’s most capable generally available model in the Opus family. It supports text, image, and file inputs with a 1M-token context window and is suited for highly autonomous agents, long-horizon agentic work, and memory-driven tasks.
One endpoint, a testable decision
Test this model and alternate routes with the same request format
Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.