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Balanced — strong quality at a mid priceCommercial API
Aion 3.5 Pricing
AionLabs · aion-labs-aion-3-5
Input / 1M tokens
$3.00
Output / 1M tokens
$6.00
Context window
262,144 tokens
≈ 350 pages of text
Max output
32,768 tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.006
1,000 requests / month$6.00/mo10,000 requests / month$60.00/mo100,000 requests / month$600.00/moEstimate your own workloadOpens the calculator with Aion 3.5 preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Supports 262k-token context and 32k output at $3/$6 per million tokens, suitable for long-document processing.
The business tradeoff
Unknown provider with no public benchmarks; limited ecosystem and unproven reliability at scale.
Cheaper from AionLabs
Head-to-head
Vendor list rates, as of Sep 23, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.