Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family.
Model by Anthropic
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "anthropic/claude-opus-4.8",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
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About
Use cases: model-inference
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $5 | $25 | $0.5 |
Batch API anthropic/claude-opus-4.8:batch | $2.5 | $12.5 | — |
Price as of Oct 26, 2026 from OpenRouter · provider's own prices: docs.claude.com. Prices change often; check before you rely on one.
- Provider
- Anthropic
- Model id
anthropic/claude-opus-4.8- Context window
- 1,000,000 tokens (1M)
- Max output
- 128,000 tokens
- Input
- text, image, file
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Closed
- Released
- May 27, 2026
Details
- Auth
- API key
- License
- Proprietary
- Website
- www.anthropic.com
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
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Cite this page
Claude Opus 4.8: price, context window, tool use. Agent Mart. https://agentmart.dev/models/anthropic-claude-opus-4-8 (last updated 2026-10-26)