Claude Sonnet 4.6
ClaudeFlagship
ThinkingTool UseVisionStructured Output
About this model
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.
Performance Tier
Flagship
Claude Sonnet 4.6 is a flagship model from Claude : the most capable in their lineup.
Best-in-class model from this provider. Highest performance across benchmarks, ideal for demanding tasks.
Pricing
This model is included in Elosia plans| Type | per 1M tokens |
|---|---|
| Input (prompt) | $3.00 |
| Output (completion) | $15.00 |
| Cache read | $0.300 |
| Cache write | $3.75 |
Capabilities
Context Length1.0M
Max Output Tokens128K
TokenizerClaude
Inputtext, image
Outputtext
Release DateFebruary 17, 2026
Benchmarks
General Intelligence
MMLU
Not reported
GPQA Diamond
89.9%
Mathematics
MATH-500
Not reported
Programming
HumanEval
Not reported
SWE-bench Verified
79.6%
Reasoning
IFEval
Not reported
ARC-AGI-2
58.3%
Humanity's Last Exam
49%
Agentic
Terminal-Bench 2.0
59.1%
Recommended Use Cases
CodingAnalysisResearchCreative Writing
Strengths
- Near-Opus performance at a fraction of the cost
- Exceptional agentic coding (SWE-bench 79.6%, close to Opus 80.8%)
- Strong graduate-level reasoning (GPQA Diamond 89.9%)
- 1M token context window for long-document tasks
Limitations
- Some traditional benchmarks not yet reported (MMLU, HumanEval)
- Slower than Haiku for simple, latency-sensitive queries
Resources
This model may use your data for training
