Aion 3.5 Mini vs Claude Sonnet 5.5
aion-labs/aion-3-5-mini · anthropic/claude-sonnet-5.5
As of November 2, 2026, Claude Sonnet 5.5 is the cheaper API on UberLLM: $0.1048 per million input tokens and $0.5238 per million output, versus $0.3063 / $0.6125 for Aion 3.5 Mini, about 22% 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 Claude Sonnet 5.5 to cut cost; choose Aion 3.5 Mini when its capabilities fit your task better.
Aion 3.5 Mini vs Claude Sonnet 5.5, side by side
| Spec | Aion 3.5 Mini | Claude Sonnet 5.5 |
|---|---|---|
| Price · input / 1M | $0.3063 | $0.1048 |
| Price · output / 1M | $0.6125 | $0.5238 |
| Context length | 262,144 | 1,000,000 |
| Max output tokens | 32,768 | 128,000 |
| Input modalities | text | text, image, file |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | Yes |
| % off list | 65% off | 94.8% off |
| First token, median (7 days) | — | 2.8 s (179 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?
Aion 3.5 Mini vs Claude Sonnet 5.5 — FAQ
Is Aion 3.5 Mini or Claude Sonnet 5.5 cheaper?
Claude Sonnet 5.5 is cheaper on a blended token mix, by about 22%. 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 Claude Sonnet 5.5?
Aion 3.5 Mini: $0.3063 in / $0.6125 out per 1M tokens. Claude Sonnet 5.5: $0.1048 in / $0.5238 out per 1M tokens. That's roughly a 22% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Aion 3.5 Mini and Claude Sonnet 5.5 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.