Custom Comparison
Compare 2 AI Models
DeepSeek V4.1-Flash vs DeepSeek V4-Flash
DeepSeek V4.1-FlashDeepSeek
DeepSeek V4-FlashDeepSeek
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Interactive Comparison
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$0.30 / $1.20 per million tokens | $0.15 / $0.60 per million tokens | |
|---|---|---|
| Identity | ||
| Developer | DeepSeek | DeepSeek |
| Released | Sep 2026 | Jul 2026 |
| Retired | — | 10 September 2026 |
| Status | GA | Retired. DeepSeek retired V4-Flash on 2026-09-10; requests to deepseek-v4-flash are now served by DeepSeek V4.1-Flash, which has its own page. The figures below are V4.1-Flash's (off-peak), recorded here before that page existed. |
| Licence | MIT | Proprietary |
| Self-hostable | Yes - open weights on Hugging Face | No |
| Cost | ||
| Blended $/1M tokensinput × 0.75 + output × 0.25 | $0.525 / 1M tokens | $0.262 / 1M tokens |
| Input price | $0.300 / 1M tokens | $0.150 / 1M tokens |
| Output price | $1.200 / 1M tokens | $0.600 / 1M tokens |
| Cached input | $0.006 / 1M tokens (peak); $0.003 off-peak | $0.014 / 1M tokens (peak); $0.007 off-peak |
| Batch discount | Off-peak billing: 50% off all rates | Off-peak billing: 50% off all rates outside 01:00-04:00 and 06:00-10:00 UTC |
| Free tier | — | Not offered |
| Capacity | ||
| Context window | 1M tokens | 1M tokens |
| Max output | 384k tokens | 384k tokens |
| Long-context surcharge | None (flat rate across the 1M window) | None — flat rate across the 1M window |
| Capability | ||
| Vision in | Yes | No |
| Audio in | No | No |
| Function calling | Yes | Yes |
| Structured output | Yes - JSON output | Yes — JSON output |
| Extended reasoning | Yes - thinking (default) and non-thinking modes | Yes — thinking (default) and non-thinking modes |
| Web search | No | No |
| Code execution | No | No |
| Access | ||
| API | Yes | Yes |
| Chat app | Yes | Yes |
| Cloud marketplaces | Not offered | Not offered |
| Fine-tuning | Not offered (weights are open) | Not offered |
| Measured quality | ||
| LMArena Elo | 1475 (checked Oct 2026) | 1436 (checked Oct 2026) |
| LMArena rank | Rank 39 | Rank 103 |
| Elo per dollarLMArena Elo ÷ blended $/1M tokens | 2810 | 5470 |
