Aion-1.0 is a multi-model system designed for high performance across various tasks, including reasoning and coding. It is built on DeepSeek-R1, augmented with additional models and techniques such as Tree of Thoughts (ToT) and Mixture of E…
Model details →AionLabs: Aion-1.0 vs OpenAI: GPT-5.1-Codex
OpenAI: GPT-5.1-Codex wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks. The model supp…
Model details →Side-by-side comparison
| Capability | AionLabs: Aion-1.0 | OpenAI: GPT-5.1-Codex | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 400K | 🏆 OpenAI: GPT-5.1-Codex |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $4.00 | $1.25 | 🏆 OpenAI: GPT-5.1-Codex |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $8.00 | $10.00 | 🏆 AionLabs: Aion-1.0 |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 OpenAI: GPT-5.1-Codex |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 OpenAI: GPT-5.1-Codex |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is AionLabs: Aion-1.0 better than OpenAI: GPT-5.1-Codex?
OpenAI: GPT-5.1-Codex wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between AionLabs: Aion-1.0 and OpenAI: GPT-5.1-Codex?
Input: $4.00 vs $1.25 per 1M tokens. Output: $8.00 vs $10.00 per 1M tokens.
What context windows do AionLabs: Aion-1.0 and OpenAI: GPT-5.1-Codex support?
AionLabs: Aion-1.0 supports up to 131K tokens. OpenAI: GPT-5.1-Codex supports up to 400K tokens.
Do both AionLabs: Aion-1.0 and OpenAI: GPT-5.1-Codex support tool calling?
AionLabs: Aion-1.0: not advertised. OpenAI: GPT-5.1-Codex: yes.
Compare AionLabs: Aion-1.0 with other models
vs AI21: Jamba Large 1.7vs AionLabs: Aion-1.0-Minivs AionLabs: Aion-2.0vs AionLabs: Aion-RP 1.0 (8B)