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feat: configurable context compaction threshold#11467

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verrerie:feature/configurable-compaction-threshold
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feat: configurable context compaction threshold#11467
verrerie wants to merge 1 commit into
anomalyco:devfrom
verrerie:feature/configurable-compaction-threshold

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@verrerie verrerie commented Jan 31, 2026

Summary

Implements configurable context compaction threshold as requested in #11314.

Changes

  • Added compaction configuration schema to opencode.json with threshold, strategy, preserveRecentMessages, preserveSystemPrompt.
  • Added support for per-model compaction configuration overrides.
  • Updated SessionCompaction.isOverflow to respect the configured threshold (global or model-specific).
  • Added unit tests for threshold logic.

Configuration Example

{
  "compaction": {
    "threshold": 0.40
  },
  "provider": {
    "google": {
      "models": {
        "gemini-1.5-pro": {
          "compaction": {
            "threshold": 0.30
          }
        }
      }
    }
  }
}

Fixes #11314

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github-actions Bot commented Jan 31, 2026

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found several related PRs that may be addressing similar functionality:

Potential Related PRs:

  1. PR fix(opencode): prevent context overflow during compaction #11453 - "fix(opencode): prevent context overflow during compaction"

    • Very recent and directly related to context overflow prevention during compaction

  2. PR feat(session): add custom compaction thresholds along with prevention of continuous compaction #10123 - "feat(session): add custom compaction thresholds along with prevention of continuous compaction"

  3. PR feat(opencode): add context overflow prevention with configurable thresholds #8810 - "feat(opencode): add context overflow prevention with configurable thresholds"

    • Previous work on configurable context overflow thresholds

  4. PR feat(opencode): trigger compaction earlier and add multi-file read #9656 - "feat(opencode): trigger compaction earlier and add multi-file read"

    • Related to compaction triggering logic

These PRs appear to be in the same feature area (configurable compaction thresholds and context overflow prevention). PR #10123 in particular seems to have similar functionality. I'd recommend checking if PR #11467 is an enhancement/update to the work already done in #10123, or if they're duplicates.

@verrerie verrerie marked this pull request as draft January 31, 2026 13:58
@verrerie verrerie closed this Jan 31, 2026
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Feature Request: Configurable Context Compaction Threshold

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@verrerie