Gemini 3.8 Flash vs Kimi K3.1 Pro
Gemini 3.8 Flash (Google) 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, Gemini 3.8 Flash is the cheaper option and Gemini 3.8 Flash is rated faster.
Specs side by side
| Spec | Gemini 3.8 Flash | Kimi K3.1 Pro |
|---|---|---|
| Provider | Moonshot AI | |
| Type | Text | Text |
| Context window | 1M | 1M |
| Max output | 64K | 400K |
| Input price | $1.50 / 1M | $2.00 / 1M |
| Output price | $7.50 / 1M | $10.00 / 1M |
| Speed | Fast | Medium |
| Arabic support | Strong | Partial |
Which should you choose?
- Lower cost, about 1.3× cheaper ($1.50 / 1M)
- Rated faster (Fast) for latency-sensitive workloads
- Stronger Arabic support for Gulf and MENA use
- 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 Gemini 3.8 Flash and Kimi K3.1 Pro?
Gemini 3.8 Flash costs less ($1.50 / 1M vs $2.00 / 1M); Gemini 3.8 Flash is rated faster; Gemini 3.8 Flash has stronger Arabic support. Both are available on thalam behind one OpenAI-compatible API.
Is Gemini 3.8 Flash or Kimi K3.1 Pro cheaper?
Gemini 3.8 Flash is cheaper on input ($1.50 / 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 Gemini 3.8 Flash 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.