Optimus Alpha has a larger context window than MiniMax M2.5 (1.0M tokens vs 205K tokens).
| Spec | MiniMax M2.5 | Optimus Alpha |
|---|---|---|
| Input price | $0.3/M tokens | — |
| Output price | $1.2/M tokens | — |
| Context window | 205K tokens | 1.0M tokens |
| Weights | Open | — |
| Free API (OpenRouter) | No | — |
| Released | Feb 2026 | Apr 2025 |
Not enough votes to call it. On the specs, nothing separates them.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
MiniMax M2.5 uses 1.5x more emoji