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Anthropic

Claude Sonnet 4.6

Frontier

AnthropicReleased on 2026-02-17

Anthropic's most capable Sonnet yet. 1M context window (beta), 30-50% faster than Sonnet 4.5, approaching Opus-level intelligence at 1/3 the cost. Default model on claude.ai. Excels at coding, computer use, agent planning, and long-context reasoning.

88
Overall Score

Core Specs

1000K
Context Window
128K
Max Output
Reasoning
Open Source
Multimodal Support
textimage

User Feedback Highlights

Based on community feedback. Hover to see original reviews.

+ Excellent for agentic workflows Still not Opus for most complex tasks+ 30-50% faster than Sonnet 4.5+ Human-level computer use capability+ Near-Opus intelligence at Sonnet price Some users report inconsistent reasoning+ 1M context window (beta) 1M context still in beta
Sentiment:👍 65%😐 18%👎 17%

Pros & Cons

Pros

  • +1M context window (beta)
  • +Near-Opus intelligence at Sonnet price
  • +30-50% faster than Sonnet 4.5
  • +Human-level computer use capability
  • +Excellent for agentic workflows

Cons

  • 1M context still in beta
  • Some users report inconsistent reasoning
  • Still not Opus for most complex tasks

Reliability

SLA99.9%
Incidents (30d)9
Last Incident2026-04-08
与 Opus 共享基础设施,近期故障频繁。4/8 故障已解决,但服务仍为 Monitoring 状态
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Pricing

Input (per 1M tokens)$3.00
Output (per 1M tokens)$15.00
Subscription$20/month
Free trial available
Updated on 2026-03-07

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💡 Sonnet 4.6 is free to use on claude.ai.

Benchmarks

sweBench80%
osWorld72%
mmlu91.2%
humanEval95.5%