about
The 4.6 update expanded context to 1 million tokens and introduced background Claude Code execution for autonomous multi-hour tasks, pushing Terminal-bench 2.0 to 65.4% and OSWorld to 72.7%. Its hybrid reasoning mode switches between instant responses and sustained chain-of-thought depending on task complexity, making it Anthropic's model for workloads that run in hours rather than seconds.
Licenseanthropic
Context window(in thousands)200000
Use cases for Claude-Opus-4-6
- Autonomous multi-hour coding sessions: Background Claude Code execution enables Opus 4.6 to run sustained agentic workflows that clone repos, implement features, run tests, and iterate without human intervention.
- Million-token research synthesis: The 1M context window processes entire research corpora, patent portfolios, or regulatory frameworks in a single pass for cross-document analysis.
- Hybrid reasoning for variable complexity: Its adaptive mode switches between instant responses and extended chain-of-thought based on task difficulty, optimizing cost and latency across mixed workloads.
Quality
Arena Elo1501
MMLU91.1
MT Bench80.9
Claude Opus 4.6 scores 90.5% on MMLU and 72.7% on SWE-bench Verified at the Opus 4 baseline, with the 4.6 update pushing OSWorld to 72.7% and Terminal-bench 2.0 to 65.4%. Compared to GPT-5.2 (MMLU ~91.4%) on the same sheet, it trades a narrow MMLU gap for stronger agentic capabilities, particularly on multi-hour autonomous workflows.
pricing
Running Claude Opus 4.6 through Telnyx Inference costs $5.00 per million input tokens and $25.00 per million output tokens. A multi-hour agentic coding session consuming 500,000 tokens would cost approximately $12.50, with the 1M-token context window enabling entire codebases to be processed without chunking.
What's Twitter saying?
- Developers praise Claude Opus 4 for top benchmarks like 72.5% on SWE-bench and 43.2% on Terminal-bench, excelling in long, uninterrupted coding workflows.
- Tech reviewers highlight its human-like reasoning, feeling more reflective and collaborative, especially on complex tradeoffs and creative tasks.
- Commentators note strong long-horizon task handling with extended thinking and tools, maintaining coherence over hours without losing context.
Explore Our LLM Library
Discover the power and diversity of large language models available with Telnyx. Explore the options below to find the perfect model for your project.
| Organization | Model Name | Tasks | Languages Supported | Context Length | Parameters | Model Tier | License |
|---|---|---|---|---|---|---|---|
| deepseek-ai | DeepSeek-R1-Distill-Qwen-14B | text generation | English | 43,000 | 14.8B | medium | deepseek |
| fixie-ai | ultravox-v0_4_1-llama-3_1-8b | audio text-to-text | Multilingual | 8,000 | 8.7B | small | mit |
| gemma-2b-it | text generation | English | 8,192 | 2.5B | small | gemma | |
| gemma-7b-it | text generation | English | 8,192 | 8.5B | small | gemma | |
| meta-llama | Llama-3.3-70B-Instruct | text generation | Multilingual | 99,000 | 70.6B | large | llama3.3 |
| meta-llama | Llama-Guard-3-1B | safety classification | Multilingual | 128,000 | 1.5B | small | llama3.3 |
| meta-llama | Meta-Llama-3.1-70B-Instruct | text generation | Multilingual | 99,000 | 70.6B | large | llama3.1 |
| meta-llama | Meta-Llama-3.1-8B-Instruct | text generation | Multilingual | 131,072 | 8.0B | small | llama3.1 |
| minimaxai | MiniMax-M2.5 | text generation | English | 2,000,000 | 0 | large | minimaxai |
| minimaxai | MiniMax-M2.7 | text generation | English | 200,000 | 0 | large | minimaxai |
| mistralai | Mistral-7B-Instruct-v0.1 | text generation | English | 8,192 | 7.2B | small | apache-2.0 |
| mistralai | Mistral-7B-Instruct-v0.2 | text generation | English | 32,768 | 7.2B | small | apache-2.0 |
| mistralai | Mixtral-8x7B-Instruct-v0.1 | text generation | Multilingual | 32,768 | 46.7B | medium | apache-2.0 |
| moonshotai | Kimi-K2.5 | text generation | English | 256,000 | 1.0T | large | modified-mit |
| Qwen | Qwen3-235B-A22B | text generation | English | 32,768 | 235.1B | large | apache-2.0 |
| zai-org | GLM-5.1-FP8 | text generation | English | 202,752 | 753.9B | large | mit |
| anthropic | claude-3-7-sonnet-latest | text generation | Multilingual | 200,000 | 0 | large | anthropic |
| anthropic | claude-haiku-4-5 | text generation | Multilingual | 200,000 | 0 | large | anthropic |
| anthropic | claude-opus-4-6 | text generation | Multilingual | 200,000 | 0 | large | anthropic |
| anthropic | claude-sonnet-4-20250514 | text generation | Multilingual | 200,000 | 0 | large | anthropic |
| gemini-2.0-flash | text generation | Multilingual | 1,048,576 | 0 | large | ||
| gemini-2.5-flash | text generation | Multilingual | 1,048,576 | 0 | large | ||
| gemini-2.5-flash-lite | text generation | Multilingual | 1,048,576 | 0 | large | ||
| groq | gpt-oss-120b | text generation | English | 131,072 | 117.0B | large | groq |
| groq | kimi-k2-instruct | text generation | English | 131,072 | 1.0T | large | groq |
| groq | llama-3.3-70b-versatile | text generation | Multilingual | 131,072 | 70.6B | large | llama3.3 |
| groq | llama-4-maverick-17b-128e-instruct | text generation | Multilingual | 1,000,000 | 400.0B | large | llama4 |
| groq | llama-4-scout-17b-16e-instruct | text generation | Multilingual | 128,000 | 109.0B | large | llama4 |
| openai | gpt-3.5-turbo | text generation | Multilingual | 4,096 | 0 | large | openai |
| openai | gpt-4 | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4-0125-preview | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4-0314 | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4-0613 | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4-1106-preview | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4-32k-0314 | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4-turbo-preview | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4.1 | text generation | Multilingual | 1,047,576 | 0 | large | openai |
| openai | gpt-4.1-mini | text generation | Multilingual | 1,047,576 | 0 | large | openai |
| openai | gpt-4o | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-4o-mini | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | gpt-5 | text generation | Multilingual | 400,000 | 0 | large | openai |
| openai | gpt-5-mini | text generation | Multilingual | 400,000 | 0 | large | openai |
| openai | gpt-5.1 | text generation | Multilingual | 400,000 | 0 | large | openai |
| openai | gpt-5.2 | text generation | Multilingual | 400,000 | 0 | large | openai |
| openai | o1-mini | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | o1-preview | text generation | Multilingual | 128,000 | 0 | large | openai |
| openai | o3-mini | text generation | Multilingual | 200,000 | 0 | large | openai |
| xai-org | grok-2 | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-2-latest | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3 | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-beta | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-fast | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-fast-beta | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-fast-latest | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-latest | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-mini | text generation | Multilingual | 131,072 | 0 | large | xai |
| xai-org | grok-3-mini-fast | text generation | Multilingual | 131,072 | 0 | large | xai |
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faqs
Is Claude Opus 4.6 the best model?
Claude Opus 4.6 is Anthropic's most capable model, with exceptional performance on complex reasoning, coding, and agentic workflows. It achieves state-of-the-art results on several benchmarks and is considered one of the strongest models available across providers.
What is Claude Opus 4.6 good at?
Claude Opus 4.6 excels at complex multi-step reasoning, advanced coding, mathematical problem solving, and long-context analysis with its 1M token context window. It is particularly strong at agentic tasks and sustained workflows that require planning and tool use.
Is Claude Opus 4.6 free?
Claude Opus 4.6 is available through claude.ai for Pro subscribers ($20/month) with usage limits. Through the API, it is priced at $15 per million input tokens and $75 per million output tokens. It is also available on AWS Bedrock and Azure.
Is Claude Opus 4.5 better than GPT-5.2?
Claude Opus and GPT-5 series models trade wins across different benchmarks. Opus 4.6 leads on coding tasks like SWE-bench, while GPT-5.2 excels at some knowledge work evaluations. The comparison depends heavily on the specific task and evaluation criteria used.
Why is Opus 4.6 so good?
Opus 4.6 benefits from improved training on reasoning and agentic capabilities, allowing it to handle longer tasks with less supervision. Its 1M token context window enables processing of entire codebases and lengthy documents in a single request, which is critical for complex real-world workflows.