Claude Sonnet 4.6
Mid-tierby Anthropic
Claude Sonnet 4.6 is Anthropic's balanced mid-tier model, delivering strong reasoning and code generation at a fraction of Opus pricing. It is priced at $3 input and $15 output per million tokens with cache reads at $0.30, and it carries the full 1 million token context window at standard pricing, which makes it a practical choice for production workloads where cost matters. Claude Sonnet 5 has since landed below it at $2 and $10, so 4.6 now reads as the compatibility option for anything pinned to the older tokenizer rather than the default Sonnet to start from.
Input Price
$3.00
per 1M tokens
Output Price
$15.00
per 1M tokens
Context Window
1M
tokens
Released
2026-03
API access
Capabilities
Key Strengths
- ✓Strong reasoning at lower cost
- ✓Full capability set
- ✓1M context at standard pricing
- ✓Fast response times
Best For
- ▸Production API workloads
- ▸Code review and generation
- ▸Content creation
- ▸Data extraction
Benchmark Scores
| Benchmark | Score | Description |
|---|---|---|
| SWE-bench | 79.6 | Real-world software engineering tasks from GitHub issues (SWE-bench Verified) |
| MMLU-Pro | 88.7 | General knowledge and reasoning across 57 subjects |
| HumanEval | 92.0 | Python code generation and problem solving |
| GPQA Diamond | 65.8 | Graduate-level science questions verified by domain experts |
| MATH | 85.4 | Competition-level mathematics problems |
| FrontierCode v1.1 | 24.3 | Agentic coding on frontier software engineering tasks (Main split) |
Scores sourced from public benchmark datasets. See full benchmark leaderboard for all models.
Pricing Details
Input tokens
$3.00
per 1M tokens
Output tokens
$15.00
per 1M tokens
Estimated cost per 1K requests
$10.50
~1K input + ~500 output tokens avg
Prices are subject to change. Check the official documentation for current pricing. See the cost calculator for detailed estimates.
Related Models
Claude Mythos 5.1
FlagshipAnthropic
$10.00 in / $50.00 out
Claude Opus 5.5
FlagshipAnthropic
$4.00 in / $20.00 out
Claude Opus 5
FlagshipAnthropic
$5.00 in / $25.00 out
Claude Fable 5.1
FlagshipAnthropic
$10.00 in / $50.00 out
Claude Fable 5
FlagshipAnthropic
$10.00 in / $50.00 out
Claude Opus 4.8
FlagshipAnthropic
$5.00 in / $25.00 out
Claude Opus 4.7
Mid-tierAnthropic
$5.00 in / $25.00 out
Claude Opus 4.6
FlagshipAnthropic
$5.00 in / $25.00 out
Claude Sonnet 5
Mid-tierAnthropic
$2.00 in / $10.00 out
Claude Haiku 4.5
BudgetAnthropic
$1.00 in / $5.00 out
GPT-6 Sol
Mid-tierOpenAI
$2.00 in / $10.00 out
GPT-5.6 Terra
Mid-tierOpenAI
$2.00 in / $12.00 out
o3-mini
Mid-tierOpenAI
$1.10 in / $4.40 out
Gemini 3.8 Flash
Mid-tier$0.75 in / $3.75 out