Claude Opus 4.6 vs DeepSeek V4 Flash
Claude Opus 4.6 leads in 3 of 8 categories
Arena ELO
Claude Opus 4.6
Cheaper
DeepSeek V4 Flash
Faster
Claude Opus 4.6
Detailed Comparison
| Category | Claude Opus 4.6 | DeepSeek V4 Flash |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context Window | 1M WIN | 128K |
| Input Price ($/1M) | $5 | $0.14 WIN |
| Output Price ($/1M) | $25 | $0.28 WIN |
| Arena ELO | 1549 WIN | N/A |
| Coding | 80.8% SWE-bench | N/A |
| Reasoning | 65.4% Terminal-Bench | N/A |
| Speed (tokens/sec) | ~40 t/s WIN | N/A |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, Claude Opus 4.6 or DeepSeek V4 Flash?
DeepSeek V4 Flash is approximately 99% cheaper than Claude Opus 4.6 per million tokens.
Which is better for coding, Claude Opus 4.6 or DeepSeek V4 Flash?
Claude Opus 4.6 scores 80.8% SWE-bench on coding benchmarks, while DeepSeek V4 Flash scores N/A.
Which has a larger context window?
Claude Opus 4.6 supports 1M context, while DeepSeek V4 Flash supports 128K.
Is Claude Opus 4.6 or DeepSeek V4 Flash open source?
Claude Opus 4.6 is proprietary. DeepSeek V4 Flash is open source.
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