DeepSeek V3.1
language modelDeepSeek
DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...
Key facts
| Made by | DeepSeek |
|---|---|
| Type | language model |
| Released | August 21, 2025 |
| Reads at once | 163,840 tokens |
| Price (API, per million tokens) | $0.25 in · $0.95 out |
| Input → output | text → text |
Questions about DeepSeek V3.1
Who makes DeepSeek V3.1?
DeepSeek V3.1 is made by DeepSeek.
When was DeepSeek V3.1 released?
We first saw DeepSeek V3.1 listed on August 21, 2025.
How much does DeepSeek V3.1 cost?
Through OpenRouter it costs $0.25 per million input tokens and $0.95 per million output tokens. Prices change, so check the provider before you build on it.
How much text can DeepSeek V3.1 read at once?
Up to 163,840 tokens, roughly 122.9K words.
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