Aion 3.5 Mini vs Claude Opus 5.5
aion-labs/aion-3-5-mini · anthropic/claude-opus-5.5
As of November 2, 2026, Claude Opus 5.5 is the cheaper API on UberLLM: $0.1317 per million input tokens and $0.6583 per million output, versus $0.3063 / $0.6125 for Aion 3.5 Mini, about 2% 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 Opus 5.5 to cut cost; choose Aion 3.5 Mini when its capabilities fit your task better.
Aion 3.5 Mini vs Claude Opus 5.5, side by side
| Spec | Aion 3.5 Mini | Claude Opus 5.5 |
|---|---|---|
| Price · input / 1M | $0.3063 | $0.1317 |
| Price · output / 1M | $0.6125 | $0.6583 |
| 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 | 96.7% 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. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Aion 3.5 Mini vs Claude Opus 5.5 — FAQ
Is Aion 3.5 Mini or Claude Opus 5.5 cheaper?
Claude Opus 5.5 is cheaper on a blended token mix, by about 2%. 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 Opus 5.5?
Aion 3.5 Mini: $0.3063 in / $0.6125 out per 1M tokens. Claude Opus 5.5: $0.1317 in / $0.6583 out per 1M tokens. That's roughly a 2% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Aion 3.5 Mini and Claude Opus 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.