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AionLabs: Aion 3.5 API Pricing

AionLabs: Aion 3.5 is an API model from aion-labs. It costs $3 per 1M input tokens and $6 per 1M output tokens, with cached input at $0.75. Its context window is 262,144 tokens with up to 32,768 output tokens. A workload of 10M input + 2M output tokens costs about $42 per month.
Input
$3
per 1M tokens
Output
$6
per 1M tokens
Cached input
$0.75
per 1M tokens
Context window
262K
262,144 tokens
Blended (80/20)
$3.6
per 1M tokens

Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple specialized models each...

How much does AionLabs: Aion 3.5 cost for a real workload?

At 10M input + 2M output tokens per month, AionLabs: Aion 3.5 costs about $42 ($30 input + $12 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to AionLabs: Aion 3.5?

Where to run AionLabs: Aion 3.5

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

Run it on AI/ML API →Run it on Novita AI →

Disclosure: links to these platforms may be affiliate links — if you sign up or buy through them, LLMPrices may earn a commission at no extra cost to you.

Compare AionLabs: Aion 3.5 with other models

AionLabs: Aion 3.5 vs AionLabs: Aion 3.5 MiniAionLabs: Aion 3.5 vs AionLabs: Aion-3.0-MiniAionLabs: Aion 3.5 vs AionLabs: Aion-2.0AionLabs: Aion 3.5 vs AionLabs: Aion-RP 1.0 (8B)AionLabs: Aion 3.5 vs AionLabs: Aion-3.0

Frequently asked questions

How much does AionLabs: Aion 3.5 cost?

AionLabs: Aion 3.5 costs $3 per 1M input tokens and $6 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $42.

What is the context window of AionLabs: Aion 3.5?

AionLabs: Aion 3.5 has a context window of 262,144 tokens and can return up to 32,768 output tokens per response.

What are cheaper alternatives to AionLabs: Aion 3.5?

Cheaper models include OpenAI: GPT-5.4 (batch) ($1.25 in / $7.5 out), DeepSeek: DeepSeek Pro Latest ($0.1307 in / $8 out), SpaceXAI: Grok 4.7 ($2 in / $6 out). See the full list on this page.

Is AionLabs: Aion 3.5 free to use?

No. AionLabs: Aion 3.5 is a paid model at $3 input / $6 output per 1M tokens. 21 free models are listed on the free models page.

Provider: aion-labs · Model ID: aion-labs/aion-3.5 · Modality: text->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices