Claude 3.5 Sonnet vs DeepSeek-V3.1: Specs & Benchmark Comparison
| Characteristic | Claude 3.5 Sonnet | DeepSeek-V3.1 |
|---|---|---|
| Company | Anthropic | DeepSeek |
| Release Date | June 21, 2024 | January 9, 2025 |
| Parameters | — | 671B |
| Multimodal | Yes | No |
| Context (input) | 200K | 164K |
| Context (output) | 200K | 164K |
| Input Price / 1M | $3.00 | $0.27 |
| Output Price / 1M | $15.00 | $1.00 |
| Average Score | 0.8 | 0.8 |
| Benchmarks | ||
| GPQA | 0.6 | 0.8 |
| MMLU-Pro | 0.8 | 0.8 |
Visual Benchmark Comparison
Claude 3.5 Sonnet
DeepSeek-V3.1
GPQA0.6 vs 0.8
0.6
0.8
MMLU-Pro0.8 vs 0.8
0.8
0.8
Verdict
DeepSeek-V3.1 leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude 3.5 Sonnet — 0.8, DeepSeek-V3.1 — 0.8.
API Cost
DeepSeek-V3.1 is 14.2x cheaper: input $0.27/1M vs $3.00/1M tokens.
Context Window
Claude 3.5 Sonnet supports a larger context: 200K vs 164K tokens.
Recency
DeepSeek-V3.1 is newer: released 1/9/2025 vs 6/21/2024.
More About These Models
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Frequently Asked Questions
Which is better for coding — Claude 3.5 Sonnet or DeepSeek-V3.1?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude 3.5 Sonnet or DeepSeek-V3.1?
DeepSeek-V3.1 is cheaper for input: $0.27 per 1M tokens vs $3.00.
Which has a larger context window — Claude 3.5 Sonnet or DeepSeek-V3.1?
Claude 3.5 Sonnet supports a larger context: 200,000 tokens vs 163,840.
The Claude 3.5 Sonnet and DeepSeek-V3.1 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude 3.5 Sonnet or DeepSeek-V3.1 page. See also the complete list of AI model comparisons.