Claude Sonnet 4.6 vs R1 0528
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Sonnet 4.6 and R1 0528.
Claude Sonnet 4.6
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...
R1 0528
May 28th update to the [original DeepSeek R1](/deepseek/deepseek-r1) Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...
Technical Specifications
| Specification | Claude Sonnet 4.6 | R1 0528 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context Window | 1,000,000 tokens | 163,840 tokens |
| Agent Suitability | 94/100 | N/A |
| Time to First Token (TTFT) | 350 ms | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2026-02-17 | 2025-05-28 |
API Pricing Comparison
Input Price per Million Tokens
Claude Sonnet 4.6
$3.00
R1 0528
$0.50
Output Price per Million Tokens
Claude Sonnet 4.6
$15.00
R1 0528
$2.15
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Sonnet 4.6 Quirks & Gotchas
- ▸Best balance of speed and capability — default for most Claude integrations
- ▸Computer-use (beta) feature enables autonomous UI interaction
R1 0528 Quirks & Gotchas
No developer gotchas reported.