DeepSeek V4 Flash 0731 vs Kimi K3.1 Pro
DeepSeek V4 Flash 0731 (DeepSeek) vs Kimi K3.1 Pro (Moonshot AI), compared on price, context, speed and Arabic support. Both run on thalam through one OpenAI-compatible API, so you can switch between them with a single model id change. At a glance, DeepSeek V4 Flash 0731 is the cheaper option and DeepSeek V4 Flash 0731 is rated faster.
Specs side by side
| Spec | DeepSeek V4 Flash 0731 | Kimi K3.1 Pro |
|---|---|---|
| Provider | DeepSeek | Moonshot AI |
| Type | Text | Text |
| Context window | 1M | 1M |
| Max output | 384K | 400K |
| Input price | $0.140 / 1M | $2.00 / 1M |
| Output price | $0.280 / 1M | $10.00 / 1M |
| Speed | Fast | Medium |
| Arabic support | Partial | Partial |
Which should you choose?
- Lower cost, about 14.3× cheaper ($0.140 / 1M)
- Rated faster (Fast) for latency-sensitive workloads
- Moonshot's post-trained successor to Kimi K3. A 1M-token context, built for long coding and agent work, and it reads images and video
One OpenAI-compatible endpoint, one bill. Switch between them with a single model id change, pay per use, credits never expire.
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FAQ
What's the difference between DeepSeek V4 Flash 0731 and Kimi K3.1 Pro?
DeepSeek V4 Flash 0731 costs less ($0.140 / 1M vs $2.00 / 1M); DeepSeek V4 Flash 0731 is rated faster. Both are available on thalam behind one OpenAI-compatible API.
Is DeepSeek V4 Flash 0731 or Kimi K3.1 Pro cheaper?
DeepSeek V4 Flash 0731 is cheaper on input ($0.140 / 1M vs $2.00 / 1M). On thalam you pay per use, so you can route cheap-by-default and fall back to the other only when needed.
Can I use both DeepSeek V4 Flash 0731 and Kimi K3.1 Pro with one API key?
Yes. thalam is OpenAI-compatible, so both models are reachable through the same endpoint. Switching between them is a one-line model id change, no code rewrite.