Aion 3.5 Mini pricing
$0.70 per 1M input tokens and $1.40 per 1M output tokens. In real work that is 0.23¢ per chat answer and 1.1¢ to summarize a 20-page PDF.
What Aion 3.5 Mini costs per task
Token counts estimated from a measured model of the same lab (Gemini 3.8 Flash), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 0.23¢$2.33 / 1,000 | 35 in · 804 out · 843 reasoning | 165 of 336 | estimated |
| Reply to a customer email | 0.10¢$0.97 / 1,000 | 276 in · 130 out · 424 reasoning | 168 of 336 | estimated |
| Write a 1,500-word blog post | 0.51¢$5.13 / 1,000 | 53 in · 2,674 out · 964 reasoning | 133 of 336 | estimated |
| Write 10 product descriptions | 0.44¢$4.36 / 1,000 | 298 in · 1,149 out · 1,817 reasoning | 136 of 336 | estimated |
| Translate 1,000 words | 0.72¢$7.22 / 1,000 | 1,334 in · 1,323 out · 3,167 reasoning | 157 of 336 | estimated |
| Proofread one page (500 words) | 0.21¢$2.06 / 1,000 | 720 in · 666 out · 443 reasoning | 155 of 336 | estimated |
| Summarize a 20-page PDF | 1.1¢$10.86 / 1,000 | 13,000 in · 545 out · 713 reasoning | 192 of 336 | estimated |
| Extract data from an invoice | 0.24¢$2.41 / 1,000 | 461 in · 549 out · 943 reasoning | 174 of 336 | estimated |
| Analyze a 200-row spreadsheet | 1.6¢$15.90 / 1,000 | 6,432 in · 1,038 out · 7,100 reasoning | 136 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 0.56¢$5.63 / 1,000 | 3,681 in · 682 out · 1,499 reasoning | 182 of 336 | estimated |
| Classify 100 support tickets | 1.0¢$10.29 / 1,000 | 1,425 in · 582 out · 6,059 reasoning | 209 of 336 | estimated |
| Review 500 lines of code | 0.67¢$6.68 / 1,000 | 5,313 in · 2,116 out | 106 of 336 | estimated |
| Write a SQL query | 0.23¢$2.34 / 1,000 | 137 in · 557 out · 1,043 reasoning | 172 of 336 | estimated |
| Run a 50-step coding agent | 53¢$533 / 1,000 | 2,239,737 in · 15,014 out · 47,150 reasoning | 179 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving Aion 3.5 Mini through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
| A AionLabsunknown | $0.70 / $1.40 | $0.18 | 262K | 100% |
Price history
First seen in our price history on Sep 29, 2026 at $0.70 input / $1.40 output. The list price has not changed since.
FAQ
How much does Aion 3.5 Mini cost?
Aion 3.5 Mini costs $0.70 per 1 million input tokens and $1.40 per 1 million output tokens, with cached input at $0.18 (list price on Oct 18, 2026). In practice one chat answer costs about 0.23¢ and summarizing a 20-page PDF about 1.1¢.
Where is Aion 3.5 Mini cheapest?
Among 1 providers we track, the lowest list price today is at AionLabs: $0.70 input and $1.40 output per 1M tokens.
Does Aion 3.5 Mini charge for reasoning tokens?
Yes. Reasoning (thinking) tokens are billed as output tokens. That is why the cost per task can be much higher than the visible answer suggests - our task costs include them.
Is the Aion 3.5 Mini cost per task measured or estimated?
Estimated: Aion 3.5 Mini was not run directly. Tokens come from Gemini 3.8 Flash and are rescaled by the tokenizer of Aion Labs. Real usage can differ.