Anthropic: Claude Opus 4.6
Chatanthropic/claude-opus-4.6Claude Opus 4.6 is Anthropic's strongest model for coding and long-running professional tasks, released on 2026-02-05. It is built for agents that operate across entire workflows rather than single prompts, making it effective for large codebases, complex refactors, and multi-step debugging, with deeper contextual understanding and stronger problem decomposition. Beyond coding, it produces near-production-ready documents, plans, and analyses in a single pass and stays coherent across very long outputs. Supports reasoning, vision, tool use, PDF input, and prompt caching. Context window: 1M tokens, output: 128K. Available via OpenAI and Anthropic protocols.
Providers
/v1/chat/completions/v1/responsesCode Examples
import anthropicclient = anthropic.Anthropic(base_url="https://api.ofox.run/anthropic",api_key="YOUR_OFOX_API_KEY",)message = client.messages.create(model="anthropic/claude-opus-4.6",max_tokens=1024,messages=[{"role": "user", "content": "Hello!"}],)print(message.content[0].text)
Uptime & Status
Benchmarks
Anthropic: Claude Opus 4.6 scores 1498 in the Overall category of the LMArena text leaderboard (style control), ranking #4 of 374 models based on 63,487 human preference votes (updated 2026-07-12).
| Category | Arena Score | 95% CI | Rank | Votes |
|---|---|---|---|---|
| Overall | 1494–1501 | #4 of 374 | 63,487 | |
| Hard Prompts | 1523–1532 | #3 of 374 | 40,530 | |
| Coding | 1542–1554 | #5 of 369 | 17,517 | |
| Math | 1493–1514 | #5 of 362 | 3,537 | |
| Creative Writing | 1471–1485 | #7 of 372 | 10,341 | |
| Instruction Following | 1494–1505 | #4 of 374 | 20,410 | |
| Chinese | 1536–1559 | #3 of 344 | 3,242 |
Source: LMArena · CC BY 4.0 · Updated 2026-07-12 · Methodology ↗ · Ranks compare models within each category of the LMArena text leaderboard (style control). Scores come from third-party human preference evaluations, not from OFOX.