Open-Source Alternatives to 
GPT-5.6 Luna
The best open-weight, self-hostable alternatives to GPT-5.6 Luna 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 GPT-5.6 Luna
GPT-5.6 Luna 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.
DeepSeek V4.1 Flash Open
2.0 pts ABOVE GPT-5.6 Luna on the Artificial Analysis intelligence index · 2.0× cheaper per million output tokens
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...
DeepSeek V4.1 Flash vs GPT-5.6 Luna →See the full open-source leaderboard
Live ranking of open-weight models with pricing, context windows and capabilities.
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