Open-Source Alternatives to 
o3 Pro
The best open-weight, self-hostable alternatives to o3 Pro 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 o3 Pro
o3 Pro 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.
Kimi K3.1 Pro Open
33.2 pts ABOVE o3 Pro on the Artificial Analysis intelligence index · 8.0× cheaper per million output tokens
Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window. It is built for long-horizon coding, 3D...
Kimi K3.1 Pro vs o3 Pro →XI MiMo-V2.6-Pro Open
24.4 pts ABOVE o3 Pro on the Artificial Analysis intelligence index · 92.0× 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 o3 Pro →
Qwen3.8 Max (0902) Open
23.5 pts ABOVE o3 Pro on the Artificial Analysis intelligence index · 13.3× cheaper per million output tokens
Qwen3.8 Max 0902 is an updated snapshot of Qwen3.8 Max from Alibaba's Qwen team. It is a 2.4-trillion-parameter mixture-of-experts model that accepts text, image, and video input and returns text,...
Qwen3.8 Max (0902) vs o3 Pro →
DeepSeek V4.1 Flash 1017 Open
23.2 pts ABOVE o3 Pro on the Artificial Analysis intelligence index · 133.3× cheaper per million output tokens
DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...
DeepSeek V4.1 Flash 1017 vs o3 Pro →
Step 5 Preview Open
21.8 pts ABOVE o3 Pro on the Artificial Analysis intelligence index · 29.6× cheaper per million output tokens
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...
Step 5 Preview vs o3 Pro →
MiniMax M3.1 Flash Open
20.8 pts ABOVE o3 Pro on the Artificial Analysis intelligence index · 133.3× cheaper per million output tokens
MiniMax-M3.1-Flash is a multimodal model from MiniMax. Compared with M3, it delivers significant improvements across multiple benchmarks, particularly in complex agentic tasks, coding, and cybersecurity. It is built for complex,...
MiniMax M3.1 Flash vs o3 Pro →See the full open-source leaderboard
Live ranking of open-weight models with pricing, context windows and capabilities.
Open the leaderboard →