AionLabs / aion-labs/aion-2.5

AionLabs: Aion 2.5 - access through LLMTR

Aion 2.5 is a roleplay-focused model aimed at more natural responses and faster turns than Aion 2.0. It is useful for preserving character voice, building scene tension, keeping tone across long conversations, and producing creative prose. It supports a 128K context window, 32K max output, and cache-read pricing.

Technical specifications

Canonical IDaion-labs/aion-2.5
ProviderAionLabs
Context window131,072 tokens
OperationsCHAT_COMPLETIONS
Modalitiestext

Pricing

A 6% platform margin applies to credit top-ups; model usage prices are not separately marked up.

OperationMetricUnitPrice
CHAT_COMPLETIONSINPUT_TEXTPER_1M_TOKENS$1.00
CHAT_COMPLETIONSCACHE_READPER_1M_TOKENS$0.350000
CHAT_COMPLETIONSOUTPUT_TEXTPER_1M_TOKENS$3.00

Example usage

With existing OpenAI SDK flows, change only the base URL and model identifier.

curl https://llmtr.com/v1/chat/completions \
  -H "Authorization: Bearer llmtr-your_key" \
  -H "Content-Type: application/json" \
  -d '{"model":"aion-labs/aion-2.5","messages":[{"role":"user","content":"Hello"}]}'

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