Openai GPT-5 Mini vs DeepSeek V4.1 Flash 260910: cost comparison
Prices updated 2026-10-30 · computed from live provider data
Short answer: DeepSeek V4.1 Flash 260910 is cheaper on a
3:1 input/output blend — $0.525 per million tokens versus
$0.525, a 0% difference.
DeepSeek V4.1 Flash 260910 offers the larger context window at 1,048,568 tokens, against 1,000,000 for Openai GPT-5 Mini.
Head to head
| Openai GPT-5 Mini | DeepSeek V4.1 Flash 260910 | |
|---|---|---|
| Input, per 1M tokens | $0.300 | $0.300 |
| Output, per 1M tokens | $1.20 | $1.20 |
| Blended 3:1, per 1M | $0.525 | $0.525 |
| Context window | 1,000,000 | 1,048,568 |
| Vendor | snowflake | streamlake |
Monthly cost at real volumes
| Workload (input / output) | Openai GPT-5 Mini | DeepSeek V4.1 Flash 260910 |
|---|---|---|
| 1M in / 250K out | $0.600 | $0.600 |
| 10M in / 2.5M out | $6.00 | $6.00 |
| 100M in / 25M out | $60.00 | $60.00 |
Which should you pick?
Pick DeepSeek V4.1 Flash 260910 when you need the longer context window (1,048,568 vs 1,000,000 tokens). Pick DeepSeek V4.1 Flash 260910 when price per token dominates your workload — high-volume classification, extraction, or batch summarisation.