Gemini 3.8 Flash vs Gemini 4 Argon
Gemini 3.8 Flash (Google) vs Gemini 4 Argon (Google), 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 | Gemini 4 Argon |
|---|---|---|
| Provider | ||
| Type | Text | Text |
| Context window | 1M | 1M |
| Max output | 64K | 64K |
| Input price | $1.50 / 1M | $2.00 / 1M |
| Output price | $7.50 / 1M | $10.00 / 1M |
| Speed | Fast | Medium |
| Arabic support | Strong | Strong |
Which should you choose?
- Lower cost, about 1.3× cheaper ($1.50 / 1M)
- Rated faster (Fast) for latency-sensitive workloads
- Google's first Gemini 4 model and its newest frontier model, built for long, multi-step work in coding, finance, legal and research. 1M-token context, reasoning, and text, image, video and audio input. From 1 December 2026: $4.00 in / $20.00 out per 1M tokens
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 Gemini 4 Argon?
Gemini 3.8 Flash costs less ($1.50 / 1M vs $2.00 / 1M); Gemini 3.8 Flash is rated faster. Both are available on thalam behind one OpenAI-compatible API.
Is Gemini 3.8 Flash or Gemini 4 Argon 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 Gemini 4 Argon 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.