Author's Description
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.
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
Anthropic's Claude Sonnet 4.6, created on Feb 17, 2026, demonstrates competitive response times, ranking in the 58th percentile across benchmarks. However, it is positioned at a premium price point, falling into the 13th percentile for cost. A standout feature is its exceptional reliability, achieving a perfect 100% success rate across all evaluated benchmarks, indicating robust technical stability. Sonnet 4.6 exhibits frontier performance across several key areas. It achieved perfect accuracy in both General Knowledge and Ethics, with the latter also being the most accurate model at its price point and speed. Its Coding and Mathematics capabilities are strong, scoring 94% accuracy and ranking in the 88th and 82nd percentiles respectively. The model also shows strong reasoning abilities (88% accuracy) and solid instruction following (70% accuracy). While its Email Classification (97% accuracy) is good, it ranks in the 42nd percentile, suggesting room for improvement relative to peers. Its hallucination rate is commendably low at 98% accuracy. Overall, Sonnet 4.6 excels in complex cognitive tasks and professional applications, making it highly suitable for iterative development, project management, and polished document creation.
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $3 |
| Completion | $15 |
| Input Cache Read | $0.3 |
| Input Cache Write | $3.75 |
| Web Search | $10000 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
Anthropic
|
Anthropic | anthropic/claude-4.6-sonnet-20260217 | 1M | $3 / 1M tokens | $15 / 1M tokens |
|
Amazon Bedrock
|
Amazon Bedrock | anthropic/claude-4.6-sonnet-20260217 | 1M | $3 / 1M tokens | $15 / 1M tokens |
|
Google
|
Google | anthropic/claude-4.6-sonnet-20260217 | 1M | $3 / 1M tokens | $15 / 1M tokens |
Benchmark Results
| Benchmark | Category | Reasoning | Strategy | Free | Executions | Accuracy | Cost | Duration |
|---|
Other Models by anthropic
|
|
Released | Params | Context |
|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
| Anthropic: Claude Opus 4.6 | Feb 04, 2026 | — | 1M |
Image input
Text input
Text output
|
★★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Opus 4.5 | Nov 24, 2025 | — | 200K |
File input
Image input
Text input
Text output
|
★★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Haiku 4.5 | Oct 15, 2025 | — | 200K |
Image input
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
| Anthropic: Claude Haiku 4.5 Unavailable | Oct 14, 2025 | — | 200K |
Image input
Text input
Text output
|
— | — | $$$$$ |
| Anthropic: Claude Sonnet 4.5 | Sep 29, 2025 | — | 1M |
File input
Image input
Text input
Text output
|
★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude Opus 4.1 | Aug 05, 2025 | — | 200K |
File input
Image input
Text input
Text output
|
★★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Opus 4 | May 22, 2025 | — | 200K |
File input
Image input
Text input
Text output
|
★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Sonnet 4 | May 22, 2025 | — | 1M |
File input
Image input
Text input
Text output
|
★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude 3.7 Sonnet | Feb 24, 2025 | — | 200K |
File input
Image input
Text input
Text output
|
★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude 3.5 Haiku | Nov 03, 2024 | — | 200K |
Image input
Text input
Text output
|
★★★★ | ★★★ | $$$$ |
| Anthropic: Claude 3.5 Haiku (2024-10-22) Unavailable | Nov 03, 2024 | — | 200K |
File input
Image input
Text input
Text output
|
★★★★ | ★★★ | $$$$ |
| Anthropic: Claude 3.5 Sonnet | Oct 21, 2024 | ~400B | 200K |
File input
Image input
Text input
Text output
|
★★★ | ★★★★ | +$$$$$ |
| Anthropic: Claude 3.5 Sonnet (2024-06-20) Unavailable | Jun 19, 2024 | ~400B | 200K |
File input
Image input
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
| Anthropic: Claude 3 Haiku | Mar 12, 2024 | ~20B | 200K |
Image input
Text input
Text output
|
★★★★★ | ★★ | $$$ |
| Anthropic: Claude 3 Sonnet Unavailable | Mar 04, 2024 | ~200B | 200K |
Image input
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
| Anthropic: Claude 3 Opus Unavailable | Mar 04, 2024 | ~2T | 200K |
Image input
Text input
Text output
|
★★★ | ★★★ | +$$$$$ |
| Anthropic: Claude v2 Unavailable | Nov 21, 2023 | 137B | 200K |
Text input
Text output
|
★★ | ★★★★ | +$$$$$ |
| Anthropic: Claude v2.1 Unavailable | Nov 21, 2023 | 137B | 200K |
Text input
Text output
|
★★ | ★★★★ | +$$$$$ |
| Anthropic: Claude v2.0 Unavailable | Jul 27, 2023 | 137B | 100K |
Text input
Text output
|
★★★ | ★★★★ | +$$$$$ |