Claude Sonnet 5 vs DeepSeek V4 Flash
Cost and capability comparison. For a sample workload of 1,000 input and 500 output tokens across 100,000 requests/month, DeepSeek V4 Flash is cheaper by about $672.00/month.
| Claude Sonnet 5 | DeepSeek V4 Flash | |
|---|---|---|
| Provider | anthropic | deepseek |
| Input / 1M | $2.00 | $0.1400 |
| Output / 1M | $10.00 | $0.2800 |
| Per request (sample) | $0.00700 | $0.000280 |
| Monthly (sample) | $700.00 | $28.00 |
| Context window | 1,000,000 | 1,000,000 |
| Vision | Yes | No |
| Reasoning | Yes | No |
| Arena · Overall | 1440 | 1430 |
| Arena · Coding | 1545 | 1345 |
| Arena · Math & reasoning | 1410 | 1340 |
| Arena · Agentic / tool use | 1418 | 1335 |
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 28 July 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Compare on your own workload
Claude Sonnet 5 and DeepSeek V4 Flash are pre-loaded. Adjust the tokens and monthly volume to see which is cheaper for your usage.
Used unless you set active users below.
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| DeepSeek V4 Flash | DeepSeek | $0.000280 | $28.00 | $336.00 | 1,000,000 |
| Claude Sonnet 5 | Anthropic | $0.00700 | $700.00 | $8,400.00 | 1,000,000 |
FAQ
Which is cheaper, Claude Sonnet 5 or DeepSeek V4 Flash?
For a workload of 1,000 input and 500 output tokens over 100,000 requests/month, DeepSeek V4 Flash is cheaper, costing about $28.00/month versus $700.00/month.
What is the context window of Claude Sonnet 5 and DeepSeek V4 Flash?
Claude Sonnet 5 supports 1,000,000 tokens, while DeepSeek V4 Flash supports 1,000,000 tokens.
Estimates for planning only. Verify current pricing with each provider.