← Compare models
Open all in the calculator — adjust volume and token counts →
DeepSeek V4 Flash vs GPT-5.4 Mini
List-price comparison ·DeepSeek V4 Flash details ·GPT-5.4 Mini details
For a typical workload (100,000 requests / mo), DeepSeek V4 Flash is the cheapest — 90% less than the priciest here ($28.00/mo vs $270.00/mo).
| DeepSeek V4 Flash | GPT-5.4 Mini | |
|---|---|---|
| Input / 1M tokens | $0.140 | $0.750 |
| Output / 1M tokens | $0.280 | $4.50 |
| Typical request (1,200 in + 400 out) | $0.0003 | $0.0027 |
| Context window | 1,048,576 tokens | 400k tokens |
| Max output | 393,216 tokens | 128k tokens |
| Quality score | 78/100 | 80/100 |
| Tier | Flash | Balanced |
| Provider | DeepSeek | OpenAI |
Projected monthly cost
| Requests / mo | DeepSeek V4 Flash | GPT-5.4 Mini |
|---|---|---|
| 1,000 | $0.28 | $2.70 |
| 10,000 | $2.80 | $27.00 |
| 100,000 | $28.00 | $270.00 |
DeepSeek V4 Flash
Auto-synced from OpenRouter — no editorial write-up yet.
GPT-5.4 Mini
Good default for everyday chat, summarization, and lightweight agent steps where GPT-5.4-level reasoning isn't required.
Quality gap widens on long, multi-hop reasoning tasks — needs careful prompt design to avoid silent failures on edge cases.
More comparisons
Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.