Claude Opus 4.8 via the Tokenator API
What the model is for
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.
Specification
| Full name | Claude Opus 4.8 |
| API ID | claude-opus-4-8 |
| Model vendor | Anthropic |
| Type | Text model (chat / completions) |
| Context window | 1M tokens |
| Max output | 128K tokens |
| Image input | yes |
| Tokenator usage multiplier | 1.8× |
| Input modalities | text, image, file |
| Aliases | cursor-claude-opus-4-8 claude-opus-4-8[1m] |
| Supported API formats | /v1/chat/completions /v1/responses /v1/messages |
| Upstream providers | 2 |
| Current status | available |
| Data updated | 2026-08-04 |
Benchmarks
| Intelligence index | 55.7 |
| Coding index | 74.3 |
| Agentic index | 47.2 |
Artificial Analysis data loaded into the catalog for this model.
Upstream providers
| Provider | Multiplier |
|---|---|
| Anthropic Partner #2 | 1.8× |
| AiPartners Ltd | 1.8× |
A request goes to the first available provider by priority; if it fails, Tokenator switches to the next one.
Example request
curl https://api.tokenator.top/v1/chat/completions \ -H "Authorization: Bearer sk-your-tokenator-key" \ -H "Content-Type: application/json" \ -d '{ "model": "claude-opus-4-8", "messages": [{"role": "user", "content": "Hello"}] }'
Compatible tools
The model can be used in any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code, OpenClaw.
See also
FAQ about Claude Opus 4.8
What is the API ID of Claude Opus 4.8?
claude-opus-4-8 — put this into the model field of your request.
What context window does Claude Opus 4.8 have?
1M tokens; max output is 128K tokens.
How many tokens will a request cost?
(input + output) × 1.8×. See the documentation for details.
Which tools support this model?
Any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code. Setup guides are in the integrations section.