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Aion 3.5 Mini API pricing
As of October 21, 2026, AionLabs Aion 3.5 Mini costs $0.70 per million input tokens and $1.40 per million output tokens through OpenRouter, with cached input at $0.18 per million.
Aion 3.5 Mini benchmarks and specs · Every Aion Labs model's price
- Input, per million tokens$0.70
- Output, per million tokens$1.40
- Cached input, per million$0.18
- Context window262K tokens
- Max output33K tokens
- Output speedNot measured
What a request costs
Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.
| Workload | Tokens | One request | 1,000 requests | Fits the context window |
|---|---|---|---|---|
| Chat turn | 1K input + 500 output tokens | $0.0014 | $1.40 | Yes |
| Repository review | 50K input + 3K output tokens | $0.039 | $39.20 | Yes |
| Agent loop | 200K input + 10K output tokens | $0.154 | $154.00 | Yes |
| Solved coding task | One SWE-bench Verified attempt, divided by the share that succeed | Not computable | Not computable |
Price history
We read this price every day and have since October 15, 2026. It has not changed yet; any change will be listed here with its date.
- October 15, 2026 First recorded: $0.70 input, $1.40 output
Cheaper models as good as Aion 3.5 Mini
Aion 3.5 Mini has no overall or coding score, so we make no quality claim against it.
Aion 3.5 Mini pricing questions
- How much does Aion 3.5 Mini cost per million tokens?
- $0.70 per million input tokens and $1.40 per million output tokens, as listed on OpenRouter on October 21, 2026.
- Does Aion 3.5 Mini support prompt caching?
- Yes. OpenRouter lists cached input at $0.18 per million tokens, against $0.70 for uncached input.
- Has the price of Aion 3.5 Mini changed?
- Not since we started recording it daily on October 15, 2026.