[FEATURE]: Configuration option to disable message summary generation

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Is it possible to opt-out of the additional summarization calls that occur per message? I was hoping to see a configuration option skip these requests.

In this example, I send 2 requests to devstral, and opencode inserts an additional 3 requests for summary generation to haiku. (this is a screenshot of Helicone, which I'm using to monitor requests from opencode)

A summary is requested for every user message. And an additional summary request generates the session title, which is essentially a duplicate of the first message summary request.

I see the session summary in the TUI, but don't see any message summaries. So the message summaries don't seem to be adding any value for TUI users.

The message summaries are used in the web/desktop app, but I'm not using this app, and even if I did, I would prefer to downgrade the message summaries to just the first few words of each message in order to avoid the additional summarization requests.

summarizeMessage is the function that makes these requests. It populates userMsg.summary.title.
https://github.com/sst/opencode/blob/f53ebafbab35348b131edee238ec16a848094fa2/packages/opencode/src/session/summary.ts#L64-L111

A workaround to prevent all summaries is to set small_model to a non-existent model, like this:

"small_model": "skip"

https://opencode.ai/docs/config/#models

Although it would be nice to keep some summaries, like the session summary.

Another, hopefully more targeted, possible workaround is to disable the title agent:

"agent": {
    "title": {
      "disable": true
    }
  },

However that, too, will result in a generic session name not reflecting the initial user prompt.

To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.

Could this be fixed? The summaries are a worthwhile feature, I think (in particular, the diffs on the web interface), however, I'm not sure the LLM generation is worth the extra time delay when running local models. These should be separately configurable: the computed diff, the per-message summary, and the per-session title.

Agreed, this is not a great fit for use with local models that have limited context parallelism.

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[FEATURE]: Configuration option to disable message summary generation #6228

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[FEATURE]: Configuration option to disable message summary generation #6228

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milesfrain commented on Dec 27, 2025

Nindaleth commented on Dec 27, 2025

thdxr commented on Mar 25, 2026

SirNate0 commented on Apr 16, 2026

erikvanzijst commented on Oct 4, 2026

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