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fix: respect ANTHROPIC_1M_CONTEXT and VERTEX_ANTHROPIC_1M_CONTEXT env vars (#450)

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- Update preemptive-compaction hook to use 1M limit when env vars set
- Update dynamic-truncator to use 1M limit for output truncation
- Update context-window-monitor to use 1M limit for usage tracking

Previously hardcoded 200k limits caused compaction at 140k tokens even
with 1M context enabled. Now respects env vars consistently with base
opencode implementation.

Fixes compaction triggering too early with Claude Sonnet 4.5 1M context.

Related to anomalyco/opencode#6660
This commit is contained in:
Steven Vo
2026-01-03 04:06:06 -08:00
committed by GitHub
parent f61e1a5f2b
commit 99c7df5640
3 changed files with 15 additions and 3 deletions
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6
src/hooks/preemptive-compaction/index.ts
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@@ -48,7 +48,11 @@ interface MessageWrapper {
}
const CLAUDE_MODEL_PATTERN = /claude-(opus|sonnet|haiku)/i
const CLAUDE_DEFAULT_CONTEXT_LIMIT = 200_000
const CLAUDE_DEFAULT_CONTEXT_LIMIT =
process.env.ANTHROPIC_1M_CONTEXT === "true" ||
process.env.VERTEX_ANTHROPIC_1M_CONTEXT === "true"
? 1_000_000
: 200_000
function isSupportedModel(modelID: string): boolean {
return CLAUDE_MODEL_PATTERN.test(modelID)