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 get $5 of credits every 30 days, and you are considered a free user if you haven't made a payment.
| Provider |
|---|
| 164K | 128K | 8.8s | 6tps | $0.21/M | $0.79/M | Read:$0.13/M Write:— | — | — | — | — | 08/21/2025 | |||||
| 164K | 164K | 1.1s | 40tps | $0.27/M | $1.00/M | Read:$0.14/M Write:— | — | — | — | — | 08/21/2025 | |||||
| 164K | 16K | 0.4s | 89tps | $0.50/M | $1.50/M | — | — | — | — | 08/21/2025 | ||||||
| 164K | 8K | 0.6s | 48tps | $0.56/M | $1.68/M | Read:$0.28/M Write:— | — | — | — | — | 08/21/2025 | |||||
| 128K | 128K | 0.4s | 45tps | $0.60/M | $1.70/M | — | — | — | — | 08/21/2025 | ||||||
| 128K | 128K | $3.00/M | $4.50/M | — | — | — | — | 08/21/2025 |
| Model |
|---|
| 1M | 1.2s | 94tps | $0.14/M | $0.28/M | Read:$0.0/M Write:— | — | — |    | 04/23/2026 | ||||
| 1M | 0.7s | 71tps | $0.43/M | $0.87/M | Read:$0.0/M Write:— | — | — |  +1 | 04/23/2026 | ||||
| 164K | 0.6s | 82tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | — |  +2 | 12/01/2025 | ||||
| 164K | 0.3s | 87tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | — | +2 | 12/01/2025 | ||||
| 131K | 2.1s | 32tps | $0.27/M | $1.00/M | Read:$0.14/M Write:— | — | — | | 09/22/2025 | ||||
| 160K | 0.8s | 125tps | $1.35/M | $5.40/M | Read:$0.35/M Write:— | — | — | | 01/20/2025 | ||||
| 164K | 0.6s | 108tps | $0.77/M | $0.77/M | Read:$0.14/M Write:— | — | — |  | 12/26/2024 |
