DeepSeek V4 Flash 0731 vs GPT-5.6 Terra
DeepSeek V4 Flash 0731 (DeepSeek) vs GPT-5.6 Terra (OpenAI), 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 | GPT-5.6 Terra |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Type | Text | Text |
| Context window | 1M | 1M |
| Max output | 384K | 128K |
| Input price | $0.140 / 1M | $2.00 / 1M |
| Output price | $0.280 / 1M | $12.00 / 1M |
| Speed | Fast | Medium |
| Arabic support | Partial | Strong |
Which should you choose?
- Lower cost, about 14.3× cheaper ($0.140 / 1M)
- Rated faster (Fast) for latency-sensitive workloads
- Stronger Arabic support for Gulf and MENA use
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 GPT-5.6 Terra?
DeepSeek V4 Flash 0731 costs less ($0.140 / 1M vs $2.00 / 1M); DeepSeek V4 Flash 0731 is rated faster; GPT-5.6 Terra has stronger Arabic support. Both are available on thalam behind one OpenAI-compatible API.
Is DeepSeek V4 Flash 0731 or GPT-5.6 Terra 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 GPT-5.6 Terra 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.