Comparison
Claude Sonnet 5 vs DeepSeek V4 Flash
Claude Sonnet 5 charges 93% more per input token than DeepSeek V4 Flash. Output pricing favors DeepSeek V4 Flash, 97% less per token than Claude Sonnet 5.
| Field | Claude Sonnet 5 | DeepSeek V4 Flash |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context window | 1M | 1M |
| Max output | 128K | 384K |
| Input / 1M | $2.00 | $0.1493% cheaper |
| Output / 1M | $10.00 | $0.2897% cheaper |
| Cached input / 1M | $0.20 | $0.002899% cheaper |
| Batch discount | 50% | — |
| Release date | — | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Claude Sonnet 5 | DeepSeek V4 Flash |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $360.00 | $16.80cheaper |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $570.00 | $31.08cheaper |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $275.00 | $16.10cheaper |
Claude Sonnet 5 vs DeepSeek V4 Flash FAQ
- Is Claude Sonnet 5 cheaper than DeepSeek V4 Flash?
- Claude Sonnet 5 costs $2.00 per 1M input tokens versus $0.14 for DeepSeek V4 Flash — DeepSeek V4 Flash is 1329% cheaper per input token.
- Which is cheaper for output tokens, Claude Sonnet 5 or DeepSeek V4 Flash?
- Claude Sonnet 5 charges $10.00 per 1M output tokens; DeepSeek V4 Flash charges $0.28 per 1M output tokens.
- Which has the larger context window, Claude Sonnet 5 or DeepSeek V4 Flash?
- Claude Sonnet 5 does, with a 1,000,000-token context window.
- Do Claude Sonnet 5 and DeepSeek V4 Flash offer cache pricing?
- Claude Sonnet 5 discounts cached input to $0.20 per 1M tokens. DeepSeek V4 Flash discounts cached input to $0.0028 per 1M tokens.
Looking for another matchup? See all comparisons.