Seed 2.1 Turbo vs DeepSeek V4.1 Flash
bytedance/seed-2-1-turbo · deepseek/deepseek-v4.1-flash
As of November 2, 2026, DeepSeek V4.1 Flash is the cheaper API on UberLLM: $0.0002 per million input tokens and $0.0014 per million output, versus $0.3050 / $1.52 for Seed 2.1 Turbo, about 100% 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 V4.1 Flash to cut cost; choose Seed 2.1 Turbo when its capabilities fit your task better.
Seed 2.1 Turbo vs DeepSeek V4.1 Flash, side by side
| Spec | Seed 2.1 Turbo | DeepSeek V4.1 Flash |
|---|---|---|
| Price · input / 1M | $0.3050 | $0.0002 |
| Price · output / 1M | $1.52 | $0.0014 |
| Context length | 256,000 | 1,048,576 |
| Max output tokens | 65,536 | 384,000 |
| Input modalities | text, image, video | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 39% off | 99.7% off |
| First token, median (7 days) | — | 5.7 s (9,566 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 2, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Seed 2.1 Turbo vs DeepSeek V4.1 Flash — FAQ
Is Seed 2.1 Turbo or DeepSeek V4.1 Flash cheaper?
DeepSeek V4.1 Flash is cheaper on a blended token mix, by about 100%. 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 Seed 2.1 Turbo and DeepSeek V4.1 Flash?
Seed 2.1 Turbo: $0.3050 in / $1.52 out per 1M tokens. DeepSeek V4.1 Flash: $0.0002 in / $0.0014 out per 1M tokens. That's roughly a 100% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Seed 2.1 Turbo and DeepSeek V4.1 Flash 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.