DeepSeek V3.1 vs DeepSeek V4 Pro
deepseek/deepseek-v3.1 · deepseek/deepseek-v4-pro
As of November 8, 2026, DeepSeek V4 Pro is the cheaper API on UberLLM: $0.0004 per million input tokens and $0.0008 per million output, versus $0.0025 / $0.0094 for DeepSeek V3.1, about 90% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose DeepSeek V4 Pro to cut cost; choose DeepSeek V3.1 when its capabilities fit your task better.
DeepSeek V3.1 vs DeepSeek V4 Pro, side by side
| Spec | DeepSeek V3.1 | DeepSeek V4 Pro |
|---|---|---|
| Price · input / 1M | $0.0025 | $0.0004 |
| Price · output / 1M | $0.0094 | $0.0008 |
| Context length | 128,000 | 1,048,576 |
| Max output tokens | 8,000 | 65,536 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 99% off | 99.9% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 8, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
DeepSeek V3.1 vs DeepSeek V4 Pro — FAQ
Is DeepSeek V3.1 or DeepSeek V4 Pro cheaper?
DeepSeek V4 Pro is cheaper on a blended token mix, by about 90%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between DeepSeek V3.1 and DeepSeek V4 Pro?
DeepSeek V3.1: $0.0025 in / $0.0094 out per 1M tokens. DeepSeek V4 Pro: $0.0004 in / $0.0008 out per 1M tokens. That's roughly a 90% blended difference. Prices are live; UberLLM adds no fee.
Can I use both DeepSeek V3.1 and DeepSeek V4 Pro with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.