Claude Opus 4.5 vs DeepSeek-V3.1: Specs & Benchmark Comparison
| Characteristic | Claude Opus 4.5 | DeepSeek-V3.1 |
|---|---|---|
| Company | Anthropic | DeepSeek |
| Release Date | November 23, 2025 | January 9, 2025 |
| Parameters | — | 671B |
| Multimodal | Yes | No |
| Context (input) | 200K | 164K |
| Context (output) | 64K | 164K |
| Input Price / 1M | $5.00 | $0.27 |
| Output Price / 1M | $25.00 | $1.00 |
| Average Score | 0.9 | 0.8 |
| Benchmarks | ||
| GPQA | 0.9 | 0.8 |
Visual Benchmark Comparison
Claude Opus 4.5
DeepSeek-V3.1
GPQA0.9 vs 0.8
0.9
0.8
Verdict
Claude Opus 4.5 leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Opus 4.5 — 0.9, DeepSeek-V3.1 — 0.8.
API Cost
DeepSeek-V3.1 is 23.6x cheaper: input $0.27/1M vs $5.00/1M tokens.
Context Window
Claude Opus 4.5 supports a larger context: 200K vs 164K tokens.
Recency
Claude Opus 4.5 is newer: released 11/23/2025 vs 1/9/2025.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — Claude Opus 4.5 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 Opus 4.5 or DeepSeek-V3.1?
DeepSeek-V3.1 is cheaper for input: $0.27 per 1M tokens vs $5.00.
Which has a larger context window — Claude Opus 4.5 or DeepSeek-V3.1?
Claude Opus 4.5 supports a larger context: 200,000 tokens vs 163,840.
The Claude Opus 4.5 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 Opus 4.5 or DeepSeek-V3.1 page. See also the complete list of AI model comparisons.