Anthropic: Claude Sonnet 5 vs DeepSeek: DeepSeek V4.1 Flash
anthropic vs deepseek
On price, DeepSeek: DeepSeek V4.1 Flash is cheaper (blended cost is about 0.04× that of Anthropic: Claude Sonnet 5).
On capability, DeepSeek: DeepSeek V4.1 Flash has the higher intelligence index (40) — better for complex reasoning.
Verdict: pick DeepSeek: DeepSeek V4.1 Flash on a budget, or DeepSeek: DeepSeek V4.1 Flash for output quality. Full details below.
Side-by-Side Specs
| Metric | Anthropic: Claude Sonnet 5 | DeepSeek: DeepSeek V4.1 Flash |
|---|---|---|
| Input /1M | $2.00 | $0.05 |
| Output /1M | $10.00 | $0.57 |
| Blended (3:1) | $4.00 | $0.18 |
| Context | 1.0M | 1.0M |
| Intelligence | 38 | 40 |
| Coding | 72 | — |
| Math | — | — |
| Speed | 74 tok/s | 220 tok/s |
| CPS Grade | A | A |
FAQ
Which is cheaper, Anthropic: Claude Sonnet 5 or DeepSeek: DeepSeek V4.1 Flash?
On price, DeepSeek: DeepSeek V4.1 Flash is cheaper (blended cost is about 0.04× that of Anthropic: Claude Sonnet 5). Anthropic: Claude Sonnet 5: $2 in / $10 out; DeepSeek: DeepSeek V4.1 Flash: $0.051 in / $0.567 out (per 1M tokens).
Which is smarter, Anthropic: Claude Sonnet 5 or DeepSeek: DeepSeek V4.1 Flash?
On capability, DeepSeek: DeepSeek V4.1 Flash has the higher intelligence index (40) — better for complex reasoning. Coding index: Anthropic: Claude Sonnet 5 72 vs DeepSeek: DeepSeek V4.1 Flash —.
Which one should I choose?
Verdict: pick DeepSeek: DeepSeek V4.1 Flash on a budget, or DeepSeek: DeepSeek V4.1 Flash for output quality. Full details below.