Claude Opus 4.5 (latest) vs DeepSeek V4 Flash
30-second takeaway
- DeepSeek V4 Flash has the cheaper input: $0.39 vs $5 (per 1M tokens, 92% less)
- DeepSeek V4 Flash has the larger context: 1M vs 200K tokens
| Claude Opus 4.5 (latest) Anthropic | DeepSeek V4 Flash AI/ML API | |
|---|---|---|
| Input | $5 | $0.39 |
| Output | $25 | $1.56 |
| Context | 200K | 1M |
More specs (max output / capabilities)
| max output | 64,000 | 384,000 |
| Reasoning | ✓ Yes | ✓ Yes |
| Tool calls | ✓ Yes | ✓ Yes |
| Open weights | — No | ✓ Yes |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.