DeepSeek V4-Flash (Fireworks) vs DeepSeek V4-Flash (DeepInfra)
Detailed pricing comparison and cost analysis.
Updated September 2026
Cost Simulator
| Feature | DeepSeek V4-Flash (Fireworks) | DeepSeek V4-Flash (DeepInfra) |
|---|---|---|
| Provider | Fireworks AI | DeepInfra |
| Input Price (1M) | $0.14 | $0.09 |
| Output Price (1M) | $0.28 | $0.18 |
| Context Window | 1,000,000 | 1,000,000 |
Verdict
DeepSeek V4-Flash (Fireworks) costs $0.14 per 1M input tokens and $0.28 per 1M output tokens. DeepSeek V4-Flash (DeepInfra) costs $0.09 per 1M input tokens and $0.18 per 1M output tokens. DeepSeek V4-Flash (DeepInfra) is 36% cheaper on input tokens than DeepSeek V4-Flash (Fireworks). For output tokens, DeepSeek V4-Flash (DeepInfra) is the more affordable option at $0.18/1M vs $0.28.
On context window, DeepSeek V4-Flash (Fireworks) supports 1,000,000 tokens — meaning it can fit more conversation history, documents, or code in a single request. This matters for RAG pipelines, long document analysis, and agentic workflows where context builds up over many turns.
When to choose DeepSeek V4-Flash (Fireworks)
- ✓ You are already integrated with Fireworks AI
When to choose DeepSeek V4-Flash (DeepInfra)
- ✓ You need the lowest input token cost ($ 0.09/1M)
- ✓ Your workload is output-heavy — DeepSeek V4-Flash (DeepInfra) generates text cheaper
- ✓ You are already integrated with DeepInfra
Use the calculator above to simulate your specific workload and find the exact break-even point. For most applications, the cheapest model is the one that minimises your total monthly bill given your input-to-output token ratio.
Frequently Asked Questions
Is DeepSeek V4-Flash (Fireworks) cheaper than DeepSeek V4-Flash (DeepInfra)? ▼
DeepSeek V4-Flash (DeepInfra) is cheaper on input tokens at $0.09/1M vs $0.14/1M for DeepSeek V4-Flash (Fireworks) — a 36% saving.
What is the context window of DeepSeek V4-Flash (Fireworks) vs DeepSeek V4-Flash (DeepInfra)? ▼
DeepSeek V4-Flash (Fireworks) has a 1,000,000-token context window. DeepSeek V4-Flash (DeepInfra) has a 1,000,000-token context window. DeepSeek V4-Flash (Fireworks) supports the larger context, suitable for longer documents and agentic workflows.
Which model is better: DeepSeek V4-Flash (Fireworks) or DeepSeek V4-Flash (DeepInfra)? ▼
The best choice depends on your use case. For cost efficiency on input tokens, DeepSeek V4-Flash (DeepInfra) is the cheaper option. For maximum context length, DeepSeek V4-Flash (Fireworks) supports 1,000,000 tokens. Use the comparison table above to find the right fit for your workload.