Aion 3.5: API pricing, context window and capabilities

Prices from official vendor price lists · October 2026

Aion 3.5 costs $3 per 1M input tokens and $6 per 1M output tokens, with a 256K context window. Mid-priced: dearer than 75% of this rating, with Aion-2.0 as the nearest cheaper Aion Labs option. Recorded for reasoning, prompt caching, proprietary API.

Visit Aion LabsAll Aion Labs models
Capabilities
Text & chatReasoningPrompt caching
API $/1M (in / out)
$3 / $6
Context window
256K tokens
Price / mo
API only
OverviewReviews

Aion 3.5 is an AI model from Aion Labs, priced at $3 input and $6 output per 1M tokens. That places it in the mid tier of this rating — dearer than 75% of the 205 priced models listed.

It holds 256K tokens in a single conversation. Capabilities recorded in this rating: text & chat, reasoning, prompt caching, multilingual, proprietary API. Access is through the API rather than a consumer subscription.

API price$3 / $6per 1M tokens, in / out
Context256K tokenstokens per conversation
VendorAion Labsall models from this vendor
TierMiddearer than 75% of models

Cost calculator

Standard$5.25AED 19 per month
With batch −50%$2.63AED 10 per month
With caching on input$4.58AED 17 per month
Standard$52.50AED 193 per month
With batch −50%$26.25AED 96 per month
With caching on input$45.75AED 168 per month
Standard$263AED 964 per month
With batch −50%$131AED 482 per month
With caching on input$229AED 840 per month
Standard$1,050AED 3,856 per month
With batch −50%$525AED 1,928 per month
With caching on input$915AED 3,360 per month

Assumes a 1:3 input-to-output ratio, which is typical for chat and generation. Dirham figures use 3.6725 per dollar. Batch and caching discounts apply where the vendor offers them.

Compared with alternatives

How Aion 3.5 sits against its neighbours in this rating. Tap a card to open that model.

ERNIE 5.0
Cheaper
Baidu
$1.4 / $5.6119K tokens
Grok 4.6
Closest match
xAI
$2 / $6500K tokens
Mistral Medium 3.5
Step up
Mistral AI
$1.5 / $7.5256K tokens

Good and poor fit

Good fit
  • Multi-step analysis, planning and code review, where the first plausible answer is often wrong.
  • General text generation and conversation across languages.
Poor fit
  • Anything requiring image input — this model does not accept it.
  • Integrations that depend on structured function calls.

Related filters

Text & chat234 models for text generation and chat
Reasoning175 models that think before answering
Prompt caching153 models with cheap repeated context
Proprietary API151 closed-weight, API-only models
Aion Labs5 models from this vendor
All 245 modelsThe full rating with filters and prices

Frequently asked questions

How much does Aion 3.5 cost?

$3 / $6 per 1M tokens, input and output. In dirhams that is roughly AED 11.02 per 1M input tokens. Batch processing halves it where the vendor offers it.

What is the context window of Aion 3.5?

256K tokens in a single conversation.

What can Aion 3.5 do?

In this rating it is recorded with: text & chat, reasoning, prompt caching, multilingual, proprietary API.

Is Aion 3.5 a good choice?

It depends on the job. See the good-fit and poor-fit lists above, and compare against the neighbouring models before committing.

Frequently searched

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