Aion-2.0
- input
- $0.50
- output
- $2.50
- Released
- 5mo ago
Cost/1M tokens
Cursor's agent coding model, trained with more reinforcement learning on the same Kimi K2.5 checkpoint as Composer 2. Available only in Cursor, with a fast variant as the default.
How it compares
Family tree
Models trained from one another, as their makers describe it.
Kimi K2.5Moonshot AI · 2026
Frequently asked questions
API and pricing
Composer 2.5 costs $0.50 per 1M tokens for input and $2.50 per 1M tokens for output. 0 paid providers are tracked.
A typical Composer 2.5 request costs $0.0075 at the listed price, for a request of 10,000 input tokens and 1,000 output tokens.
Capabilities and specs
No, Composer 2.5 accepts text only.
Quality and benchmarks
Matched on model kind, blended price and release date, the alternatives are Aion-2.0 by AionLabs at $1.00 per 1M tokens, Aion-3.0-Mini by AionLabs at $0.875 per 1M tokens, and Seed 2.1 Turbo by ByteDance at $1.00 per 1M tokens.
Aion-2.0Composer 2.5 vs Aion-2.0Aion-3.0-MiniComposer 2.5 vs Aion-3.0-MiniSeed 2.1 TurboComposer 2.5 vs Seed 2.1 Turbo
Kimi K3, ranked 19 on Arena Text. Composer 2.5 itself is closed.
Versions and lineage
Composer 2.5 is based on Kimi K2.5.
Licensing and access
No, Composer 2.5 is closed, with a proprietary license.
Basics
Composer 2.5 was made by Cursor and released on May 18, 2026.
No, Composer 2.5 is closed and the listed API price is $0.50 input and $2.50 output per 1M tokens.
Generated from Vertical Tabs data, updated November 9, 2026.
Discussion
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