Troubleshooting opencode with Ollama
facu_75 · reddit · 2026-07-15
The author tried connecting a local Ollama model to opencode but encountered a strange issue: while the model can converse normally, it frequently outputs just a single word or gets stuck in an infinite compaction loop under smaller context settings.
Attempted Solutions
- Tested with gemma4:e4b; ollama run works perfectly fine on its own.
- Configured baseURL: http://localhost:11434/v1 in opencode.json, allowing opencode to successfully recognize and connect to the model.
- Tried tweaking context length settings on the Ollama side, but the problem persists.
Symptoms
- Outputs often degrade to single-word responses, such as hello, I, or 4.
- An infinite compaction loop occurs under smaller context limits.
The Real Issue
The core of this post isn't about "model capabilities," but rather how to properly configure opencode to use local Ollama models, making it more relevant to programming tools and agent workflows.
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