Aion 3.5 Mini vs Seed 2.1 Turbo
aion-labs/aion-3-5-mini · bytedance/seed-2-1-turbo
As of November 2, 2026, Aion 3.5 Mini is the cheaper API on UberLLM: $0.3063 per million input tokens and $0.6125 per million output, versus $0.3050 / $1.52 for Seed 2.1 Turbo, about 56% 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 Aion 3.5 Mini to cut cost; choose Seed 2.1 Turbo when its capabilities fit your task better.
Aion 3.5 Mini vs Seed 2.1 Turbo, side by side
| Spec | Aion 3.5 Mini | Seed 2.1 Turbo |
|---|---|---|
| Price · input / 1M | $0.3063 | $0.3050 |
| Price · output / 1M | $0.6125 | $1.52 |
| Context length | 262,144 | 256,000 |
| Max output tokens | 32,768 | 65,536 |
| Input modalities | text | text, image, video |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | Yes |
| % off list | 65% off | 39% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 2, 2026.
Aion 3.5 Mini vs Seed 2.1 Turbo — FAQ
Is Aion 3.5 Mini or Seed 2.1 Turbo cheaper?
Aion 3.5 Mini is cheaper on a blended token mix, by about 56%. 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 Aion 3.5 Mini and Seed 2.1 Turbo?
Aion 3.5 Mini: $0.3063 in / $0.6125 out per 1M tokens. Seed 2.1 Turbo: $0.3050 in / $1.52 out per 1M tokens. That's roughly a 56% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Aion 3.5 Mini and Seed 2.1 Turbo 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.