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Aion 3.5

262k context33k max outputreleased Sep 23, 2026ReasoningTool calling

As of Oct 4, 2026, the cheapest Aion 3.5 API price is $3 per 1M input tokens (OpenRouter) and $6 per 1M output tokens (OpenRouter). Aion 3.5 is offered by 2 providers, reasoning enabled.

Cheapest input
$3
OpenRouter
Cheapest output
$6
OpenRouter
Official
—
output per 1M tokens
Providers
2
offering this model
Spread
1.3×
max / min output

API pricing by provider

Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.

Aion 3.5 API prices by provider in USD per 1M tokens, updated Oct 4, 2026
Provider1M input1M output1M cache read1M cache writeContext
OpenRouterCheapest$3Cheapest$6$0.75—262k
Venice AI$3.75$7.5$0.9375—262k

Aion 3.5 pricing FAQ

What is the cheapest Aion 3.5 API?

As of Oct 4, 2026, OpenRouter has the lowest Aion 3.5 output price at $6 per 1M tokens, and OpenRouter has the lowest input price at $3 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

How many providers offer Aion 3.5?

2 providers list Aion 3.5 on Sovyron; 2 of them sell it at a metered per-token price.

Is Aion 3.5 free?

No provider in the Sovyron catalog lists a free tier for Aion 3.5.

What is the context window of Aion 3.5?

Aion 3.5 supports a 262k-token context window and up to 33k output tokens.