AI Models · Open-Source Alternatives
Open-Source Alternatives to 
GPT-5.6 Terra
The best open-weight, self-hostable alternatives to GPT-5.6 Terra 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 Terra
GPT-5.6 Terra 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.
No open-weight match today
No open-weight model currently sits within 3 points of GPT-5.6 Terra on the Artificial Analysis intelligence index while matching its context window and input types. We would rather say so than list models that do not compare.
Browse the full open-weight leaderboard →See the full open-source leaderboard
Live ranking of open-weight models with pricing, context windows and capabilities.
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