Aion 3.5 pricing
$3.00 per 1M input tokens and $6.00 per 1M output tokens. In real work that is 1.0¢ per chat answer and 4.5¢ to summarize a 20-page PDF.
What Aion 3.5 costs per task
Token counts estimated from a measured model of the same lab (Grok 4.7), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 1.0¢$10.36 / 1,000 | 1,192 in · 528 out · 603 reasoning | 279 of 336 | estimated |
| Reply to a customer email | 0.61¢$6.09 / 1,000 | 1,390 in · 98 out · 222 reasoning | 284 of 336 | estimated |
| Write a 1,500-word blog post | 2.2¢$22.41 / 1,000 | 1,207 in · 2,905 out · 227 reasoning | 241 of 336 | estimated |
| Write 10 product descriptions | 0.97¢$9.70 / 1,000 | 1,420 in · 859 out · 48 reasoning | 205 of 336 | estimated |
| Translate 1,000 words | 3.0¢$30.43 / 1,000 | 2,369 in · 1,226 out · 2,661 reasoning | 275 of 336 | estimated |
| Proofread one page (500 words) | 1.4¢$13.79 / 1,000 | 1,814 in · 603 out · 789 reasoning | 287 of 336 | estimated |
| Summarize a 20-page PDF | 4.5¢$45.14 / 1,000 | 13,005 in · 498 out · 523 reasoning | 297 of 336 | estimated |
| Extract data from an invoice | 1.3¢$12.57 / 1,000 | 1,507 in · 432 out · 909 reasoning | 288 of 336 | estimated |
| Analyze a 200-row spreadsheet | 20¢$204 / 1,000 | 5,605 in · 1,177 out · 30,023 reasoning | 309 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 2.0¢$20.33 / 1,000 | 4,556 in · 197 out · 913 reasoning | 279 of 336 | estimated |
| Classify 100 support tickets | 2.4¢$24.10 / 1,000 | 2,341 in · 446 out · 2,400 reasoning | 274 of 336 | estimated |
| Review 500 lines of code | 23¢$225 / 1,000 | 5,764 in · 1,463 out · 33,199 reasoning | 316 of 336 | estimated |
| Write a SQL query | 1.3¢$12.80 / 1,000 | 1,278 in · 373 out · 1,121 reasoning | 287 of 336 | estimated |
| Run a 50-step coding agent | $2.23$2,226 / 1,000 | 2,239,737 in · 15,014 out · 45,450 reasoning | 291 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving Aion 3.5 through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
| A AionLabsunknown | $3.00 / $6.00 | $0.75 | 262K | 100% |
Price history
First seen in our price history on Sep 29, 2026 at $3.00 input / $6.00 output. The list price has not changed since.
FAQ
How much does Aion 3.5 cost?
Aion 3.5 costs $3.00 per 1 million input tokens and $6.00 per 1 million output tokens, with cached input at $0.75 (list price on Oct 18, 2026). In practice one chat answer costs about 1.0¢ and summarizing a 20-page PDF about 4.5¢.
Where is Aion 3.5 cheapest?
Among 1 providers we track, the lowest list price today is at AionLabs: $3.00 input and $6.00 output per 1M tokens.
Does Aion 3.5 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 cost per task measured or estimated?
Estimated: Aion 3.5 was not run directly. Tokens come from Grok 4.7 and are rescaled by the tokenizer of Aion Labs. Real usage can differ.