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AnthropicProprietary
Claude Sonnet 4.6
Claude Sonnet 4.6 is a foundation model developed by Anthropic. It is a chat-focused large language model equipped with an extensive 1 million token context window.
Parameters
Undisclosed
Context Window
1M
License
Proprietary
Release Date
2026-02-17
API Pricing
Input Price (per 1M tokens)
$3
Output Price (per 1M tokens)
$
Billing Mode: standard
Strengths
- ・Long context understanding of 1 million tokens
- ・Advanced chat and dialogue abilities
- ・Optimized by Anthropic
Weaknesses
- ・Non-open source license
- ・Lack of transparency in internal specifications
- ・Closed environment with usage limits
Use Cases
- ・Analysis of large-scale documents
- ・Building advanced AI chatbots
- ・Summarization and extraction of long texts
Deep Analysis
Arena Elo
1467
SWE-Bench Verified
80.2%
Pricing
$3.00/$15.00 per 1M tokens
Context Window
1M tokens
Release Date
February 17, 2026
Strengths
- ・SWE-Bench 80.2% at $3/$15 — excellent value
- ・1M context window
- ・Strong code and reasoning
- ・2.5x cheaper than Opus 4.6
Weaknesses
- ・Lower Arena Elo than Opus 4.6
- ・Trails Opus on complex multi-step reasoning
- ・No audio input
Competitor Comparison
| Model | Arena | SWE | Price |
|---|---|---|---|
| Claude Opus 4.6 | 1498 | 80.8% | $5/$25 |
| GPT-5.4 | 77.5% | $2.50/$10 | |
| Gemini 3 Pro | 76.2% | $1.25/$5 |
Sources
Analysis generated: 2026-05-24