MiMo-V2.5-Pro vs Aion-2.0 compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
| Spec | MiMo-V2.5-Pro | Aion-2.0 | Winner |
|---|---|---|---|
| Maker | Xiaomi | AionLabs | – |
| Type | Open-weight | Proprietary | XIMiMo-V2.5-Pro |
| Context window | 1.1M tokens | 131K tokens | XIMiMo-V2.5-Pro |
| Input price | $0.44/M · free self-host | $0.8/M | XIMiMo-V2.5-Pro |
| Output price | $0.87/M · free self-host | $1.6/M | XIMiMo-V2.5-Pro |
| Vision / multimodal | No | No | – |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | Yes | No (API only) | XIMiMo-V2.5-Pro |
| License | Open weights | Proprietary | XIMiMo-V2.5-Pro |
MiMo-V2.5-Pro is ~1.8× cheaper than Aion-2.0 on output tokens ($0.87 vs $1.6 per M tokens).
| Capability | MiMo-V2.5-Pro | Aion-2.0 |
|---|---|---|
| Open weights (downloadable) | ✓ | ✗ |
| Self-hostable | ✓ | ✗ |
| Runs fully offline | ✓ | ✗ |
| Vision / multimodal | ✗ | ✗ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
| Criterion | MiMo-V2.5-Pro | Aion-2.0 |
|---|---|---|
| Cost-efficiency | 5.0 | 4.5 |
| Context window | 5.0 | 3.5 |
| Openness | 5.0 | 1.5 |
| Self-hosting | 5.0 | 1.0 |
| Multimodality | 3.5 | 3.5 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
MiMo-V2.5-Pro is Xiaomi’s flagship model, delivering strong performance in general agentic capabilities, complex software engineering, and long-horizon tasks, with top rankings on benchmarks such as ClawEval, GDPVal, and SWE-bench Pro....
Aion-2.0 is a variant of DeepSeek V3.2 optimized for immersive roleplaying and storytelling. It is particularly strong at introducing tension, crises, and conflict into stories, making narratives feel more engaging....
These variants are tracked but not compared here — one page per family keeps the comparison readable.
MiMo-V2.5-Pro is open-weight and competitive on many tasks, but Aion-2.0 may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.
Yes. MiMo-V2.5-Pro has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. Aion-2.0 is API-only and cannot be self-hosted.
MiMo-V2.5-Pro costs $0.87/M output vs $1.6/M for Aion-2.0 — roughly 2x cheaper via API, and free if you self-host.
Choose MiMo-V2.5-Pro if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Aion-2.0 if you want frontier capability through a managed API with zero infrastructure to run.
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