Agent may make mistakes. Verify all outputs.
DeepSeek-V3.1 is post-trained on the top of DeepSeek-V3.1-Base, which is built upon the original V3 base checkpoint through a two-phase long context extension approach, following the methodology outlined in the original DeepSeek-V3 report. We have expanded our dataset by collecting additional long documents and substantially extending both training phases. The 32K extension phase has been increased 10-fold to 630B tokens, while the 128K extension phase has been extended by 3.3x to 209B tokens. Additionally, DeepSeek-V3.1 is trained using the UE8M0 FP8 scale data format to ensure compatibility with microscaling data formats.
import { streamText } from 'ai'
const result = streamText({ model: 'deepseek/deepseek-v3.1', prompt: 'Why is the sky blue?'})Try out DeepSeek V3.1 by DeepSeek. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
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| Provider |
|---|
| 164K | 1.3s | 7tps | $0.21/M | $0.79/M | Read:$0.13/M Write:— | — | — | 08/21/2025 | ||||
| 164K | 1.0s | 40tps | $0.27/M | $1.00/M | Read:$0.14/M Write:— | — | — | 08/21/2025 | ||||
| 164K | 0.7s | 126tps | $0.50/M | $1.50/M | — | — | 08/21/2025 | |||||
| 164K | 0.7s | 44tps | $0.56/M | $1.68/M | Read:$0.28/M Write:— | — | — | 08/21/2025 | ||||
| 128K | 0.4s | 16tps | $0.60/M | $1.70/M | — | — | 08/21/2025 | |||||
| 128K | $3.00/M | $4.50/M | — | — | 08/21/2025 |
| Model |
|---|
| 1M | 0.5s | 92tps | $0.14/M | $0.28/M | Read:$0.0/M Write:— | — | — |    | 04/23/2026 | ||||
| 1M | 0.8s | 77tps | $0.43/M | $0.87/M | Read:$0.0/M Write:— | — | — |  +1 | 04/23/2026 | ||||
| 164K | 0.6s | 88tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | — |  +2 | 12/01/2025 | ||||
| 164K | 0.6s | 91tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | — | +2 | 12/01/2025 | ||||
| 131K | 1.5s | 30tps | $0.27/M | $1.00/M | Read:$0.14/M Write:— | — | — | | 09/22/2025 | ||||
| 160K | 0.3s | 134tps | $1.35/M | $5.40/M | Read:$0.35/M Write:— | — | — | | 01/20/2025 | ||||
| 164K | 0.4s | 124tps | $0.77/M | $0.77/M | Read:$0.14/M Write:— | — | — |  | 12/26/2024 |
