Aion 3.5 API pricing
aion-labs · Mid-range price tier · released 2026-09. Prices in USD per 1 million tokens. Data snapshot: 2026-11-12.
A support ticket workload of 100K requests a month costs $750.00 on Aion 3.5. Aion 3.5 has held the same list price since 2026-09-24 and is the 73rd cheapest of 113 models in the Mid-range price tier. Only one host, AionLabs, sells it, so there is no second price to shop. No Arena score is published for it, so it carries no Efficiency score and cannot hold the FinOps Friendly badge.
- Input: $3.00 per 1M tokens
- Output: $6.00 per 1M tokens
- Batch API (in/out): Not published
- Prompt-cache read: $0.75 per 1M tokens
- Context window: 262K tokens
- Arena ELO: Not published
Market position
On blended price ($5.10 per 1M tokens at 30% input, 70% output) it is cheaper than 35% of models in the Mid-range price tier: 73rd cheapest of 113, tied with one other. Across every price tier it is cheaper than 23% of priced text models in the catalogue: 233rd cheapest of 303, tied with one other. No Arena score has been published for Aion 3.5, so this page does not rank it on quality and OptimNow's quality bars do not apply to it. 66 of the 113 models we list in the Mid-range price tier carry one. An unranked model is unmeasured, not poor: the benchmark needs votes, and a recent release has not had time to collect them.
Licence, size and capabilities
No licence is recorded for Aion 3.5, so this page does not say whether it can be self-hosted. Its parameter count is not published. Listed capabilities: Text, Reasoning, Agents. Filling its 262K context window once costs $0.786 in input tokens at list price.
Pricing by host
A host is a company that runs the model and sells it by the token: the model maker, a cloud platform like Amazon Bedrock, Azure or Vertex, or an independent host. One model, several hosts, and often several prices. This model is sold by 1 host. The price we quote elsewhere on this page is marked. We quote one host's rate so that models stay comparable; it is not a recommendation to buy there.
AionLabs is the only host with a published rate, $3.00 input / $6.00 output per 1M tokens, which is the price we quote.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| AionLabs (model maker, price we quote) | $3.00 | $6.00 |
List prices as published on 2026-11-12, via OpenRouter. Negotiated rates, committed-use discounts and provisioned capacity are not shown.
Monthly cost at 100K requests, by business use case
From the after-discounts figure (prompt caching on the cached input share, batch API for async workloads, only where aion-labs publishes those rates), which assumes you implement both, to the list price. One figure means no discount is published.
| Use case | Tokens (in/out) | Monthly (after discounts – list) |
|---|---|---|
| Support Ticket | 1,500 / 500 | $548 – $750 |
| Knowledge Q&A | 2,000 / 800 | $765 – $1.1K |
| Meeting Summary | 10,000 / 1,200 | $3.5K – $3.7K |
| Marketing Content | 2,500 / 1,800 | $1.7K – $1.8K |
| Coding Task | 3,000 / 2,000 | $1.8K – $2.1K |
| Invoice Processing | 1,500 / 600 | $709 – $810 |
| Call Summary | 2,000 / 700 | $975 – $1.0K |
| Agent Workflow | 6,000 / 3,000 | $2.7K – $3.6K |
Price history
Aion 3.5 entered our daily price archive on 2026-09-24; tracking began on 2026-08-15. It listed at $3.00 input / $6.00 output per 1M tokens that day. No list price change since 2026-09-24. Last checked against the 2026-11-12 snapshot.
Alternatives to Aion 3.5
Aion 3.5 carries no Arena score, so this page cannot place it against models of comparable quality. The alternatives below are its nearest neighbours on price in the Mid-range price tier.
- Next cheaper model in the Mid-range price tier: Qwen3.8 2.4T A95B (Alibaba) at $4.80 blended, 6% less.
- Next more expensive: Mistral Medium 3.5 (Mistral) at $5.70 blended, 12% more.
Other models from AionLabs
AionLabs has 5 other models in the catalogue. Prices per 1M tokens, input then output.
- Aion 3.5 Mini: $0.70 / $1.40
- Aion-3.0-Mini: $0.70 / $1.40
- Aion-2.0: $0.80 / $1.60
- Aion-RP 1.0 (8B): $0.80 / $1.60
- Aion-3.0: $3.00 / $6.00
All 6 AionLabs models and prices
Common questions about Aion 3.5 pricing
- How much does Aion 3.5 cost?
- Aion 3.5 costs $3.00 per 1M input tokens and $6.00 per 1M output tokens. That is the model maker's own rate (AionLabs). Prices as listed on 2026-11-12.
- Which host is cheapest for Aion 3.5?
- AionLabs is the only host with a published rate, $3.00 input / $6.00 output per 1M tokens, which is the price we quote. Host rates as listed on 2026-11-12.
- Does Aion 3.5 offer batch or cached pricing?
- Yes, for prompt caching only. Cache reads cost $0.75 per 1M tokens, as listed on 2026-11-12. No batch pricing is published.
- What would Aion 3.5 cost per month?
- With the Support Ticket profile (1,500 input and 500 output tokens per request), 100,000 requests a month cost about $750 on Aion 3.5 at the list price quoted on 2026-11-12.
- Can Aion 3.5 be self-hosted?
- No licence is recorded for Aion 3.5, so this page does not say whether it can be self-hosted.
- Has the price of Aion 3.5 changed?
- Aion 3.5 entered our daily price archive on 2026-09-24; tracking began on 2026-08-15. It listed at $3.00 input / $6.00 output per 1M tokens that day. No list price change since 2026-09-24. Last checked against the 2026-11-12 snapshot.
It publishes a prompt-cache rate, which is the discount most often left out of a budget: what prompt caching saves.
These are list prices. Your real cost also depends on caching and batching, negotiated discounts, marketplace agreements, and the contracts you already have. OptimNow audits exactly that.
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