Claude Opus 4.5 vs DeepSeek-V4-Flash-0731
Claude Opus 4.5 leads in 5 of 8 categories
Arena ELO
Claude Opus 4.5
Cheaper
Claude Opus 4.5
Faster
Claude Opus 4.5
Detailed Comparison
| Category | Claude Opus 4.5 | DeepSeek-V4-Flash-0731 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context Window | 200K WIN | uncertain |
| Input Price ($/1M) | $5 WIN | N/A |
| Output Price ($/1M) | $25 WIN | N/A |
| Arena ELO | 1380 WIN | N/A |
| Coding | 80.9% SWE-bench | N/A |
| Reasoning | unknown | N/A |
| Speed (tokens/sec) | ~35 t/s WIN | N/A |
| Open Source | No | Yes |
Frequently Asked Questions
Which is better for coding, Claude Opus 4.5 or DeepSeek-V4-Flash-0731?
Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while DeepSeek-V4-Flash-0731 scores N/A.
Which has a larger context window?
Claude Opus 4.5 supports 200K context, while DeepSeek-V4-Flash-0731 supports uncertain.
Is Claude Opus 4.5 or DeepSeek-V4-Flash-0731 open source?
Claude Opus 4.5 is proprietary. DeepSeek-V4-Flash-0731 is open source.
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