Claude Sonnet 4.6
Anthropic's best balance of speed, intelligence, and cost for production workloads
Context window
200K
Input / 1M tokens
$3.00
Output / 1M tokens
$15.00
Provider
Anthropic
Claude Sonnet 4.6 sits in the middle of Anthropic's model lineup - faster and cheaper than Opus, more capable than Haiku. It handles complex coding tasks, long-document analysis, and nuanced reasoning without the wait time or price tag of frontier models. Most Claude API integrations and tools like Claude Code run on Sonnet by default.
Strengths
- ✓Strong coding and debugging across most languages
- ✓Excellent at following multi-step instructions
- ✓200K context handles entire codebases
- ✓Fast enough for interactive use cases
- ✓Solid function calling and structured output
Best for developers who...
Benchmarks
| Benchmark | Score | Notes |
|---|---|---|
| SWE-bench Verified | ~49% | Competitive with top coding models |
| MMLU | ~88% | Strong generalist knowledge |
| HumanEval | ~93% | Top-tier Python coding |
Source: Anthropic Claude 4 announcement
Tools powered by Claude Sonnet 4.6
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