Open-Source Alternatives to 
Step 5 Preview
The best open-weight, self-hostable alternatives to Step 5 Preview in 2026 — compared on price, context window and capabilities. Run them locally and cut API costs.
Refreshed from live data · olud.ai
The best open-weight alternatives to Step 5 Preview
Step 5 Preview is a proprietary, API-only model. These open-weight models can be self-hosted, run offline and used at a fraction of the cost — here's how the top ones stack up.
XI MiMo-V2.6-Pro Open
2.6 pts ABOVE Step 5 Preview on the Artificial Analysis intelligence index · 3.1× cheaper per million output tokens
MiMo-V2.6-Pro is the flagship foundation model developed by Xiaomi. Built at a scale of over 1T parameters, it is designed to push the ceiling of capability for the most demanding...
MiMo-V2.6-Pro vs Step 5 Preview →See the full open-source leaderboard
Live ranking of open-weight models with pricing, context windows and capabilities.
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