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fix(openrouter): profile moonshotai/kimi-k3 with truthful max_tokens and reasoning effort - #1325
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…and reasoning effort
OpenRouter reports max_completion_tokens: null for moonshotai/kimi-k3, so the generic fallback fabricated max_tokens = ceil(context_length * 0.2) (209,716 for a 1M window), and no reasoning effort was ever populated so the reasoning field was dropped from requests. Long turns then burned the upstream 32,768-token output cap on invisible thinking billed as completion tokens.
Add a Moonshot K3 capability profile (maxTokens 32768, supportsReasoningEffort [low, high, max] with model default high, supportsTemperature false) applied in parseOpenRouterModel at fetch time and re-applied in OpenRouterHandler.getModel() at consumption time, so users with stale cached model info are fixed without a re-fetch. The default request body becomes {max_tokens: 32768, reasoning: {effort: high}} with temperature omitted (K3 is fixed at 1.0 server-side).
Adds parse-time, stale-cache, and createMessage wire tests, plus shouldUseReasoningEffort cases for array capability with a model default effort.
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Thank you soo much for looking in to all this . I'm looking forward to the update . In the meantime , i'll keep running my custum compiled Zoocode extension |
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In `@src/api/providers/__tests__/openrouter.spec.ts`:
- Line 598: Restore the original OpenAI.prototype.chat value after the test that
assigns chatStub, using afterEach or try/finally so direct prototype mutation
cannot affect subsequent tests; keep clearAllMocks for mock state cleanup.
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- Send explicit temperature: 1.0 for Moonshot K3 via OpenRouter instead of omitting it: issue Zoo-Code-Org#1316's expected result requires the request to carry temperature: 1.0, matching the direct Moonshot provider profile (defaultTemperature: 1.0, "temperature is fixed at 1.0"). - Add a handler-level regression test for the openRouterSpecificProvider endpoint branch: a stale endpoint record (fabricated max_tokens, boolean supportsReasoningEffort) is corrected at consumption time (CodeRabbit pre-merge check: regression evidence for the endpoint path). - Restore OpenAI.prototype.chat in the Kimi K3 wire test via try/finally so the stub cannot leak into later tests; clearAllMocks does not undo prototype assignment (CodeRabbit actionable comment).
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Both sides added an import from the openrouter fetchers module: this branch imports applyOpenRouterMoonshotK3Profile, main imports getOpenRouterModels for the new fetchModels path. The merge keeps both in a single import; the K3 profile re-application at model-consumption time is untouched. Local proofs at the merge: openrouter provider + fetchers suites 58 passed; tsc --noEmit clean; ESLint --max-warnings=0 clean; prettier clean on the touched file.
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Related GitHub Issue
Closes: #1316
Description
OpenRouter reports
max_completion_tokens: nullformoonshotai/kimi-k3, so the generic fallback fabricatedmax_tokens = ceil(context_length * 0.2)(209,716 for a 1M context window), and since no reasoning effort was ever populated for non-Anthropic ids, thereasoningfield was dropped from every request. Long turns then burned the upstream 32,768-token output cap on invisible thinking (measured: 507 s / 309 s turns, hidden reasoning billed as completion tokens).This fix adds a Moonshot K3 capability profile:
applied in two places:
parseOpenRouterModel()returns its result through the exportedapplyOpenRouterMoonshotK3Profile()(id-list based, matching the existing per-model override pattern in the same file),OpenRouterHandler.getModel()re-applies the profile to the resolved record, because parsed records are persisted in the model cache and records cached before this profile existed still carry the fabricated value. This also covers theopenRouterSpecificProviderendpoint path, which flows through the samegetModel().Result: a default Kimi K3 request now carries
{"max_tokens": 32768, "temperature": 1, "reasoning": {"effort": "high"}}. The explicittemperature: 1.0matches the issue's expected result (K3 is fixed at 1.0 upstream). The generic 0.2 fallback and all existing model overrides are untouched.Notes:
temperature: 1.0, so the profile setssupportsTemperature: true+defaultTemperature: 1.0— the same convention as the direct Moonshot provider's K3 profile (defaultTemperature: 1.0, // temperature is fixed at 1.0). Omitting the field (the earliersupportsTemperature: falseapproach) would have satisfied the server default but deviated from the issue's acceptance criteria.~moonshotai/kimi-latestis profiled alongside the exactmoonshotai/kimi-k3id: the catalogue identifier for the rolling Kimi alias keeps its~prefix (verified against the liveGET /api/v1/modelscatalogue), and issue [BUG] OpenRouter + Kimi K3: requests sent with no reasoning effort and fabricated max_tokens=209,716 → multi-minute invisible-thinking turns #1316 asks for the alias to be profiled as well.src/shared/api.tsorModelInfotype changes were needed: the array-capability + model-default-effort logic inshouldUseReasoningEffortand thereasoningEffortfield already exist.finish_reason: "length"handling inNativeToolCallParsernoted in the issue was left untouched (never observed firing; out of scope per the issue).Test Procedure
Manual verification would additionally require a live OpenRouter key + Moonshot model access; the wire test asserts the exact outgoing request shape.
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Review Feedback (2026-09-11 cycle)
Mutation Gate
The branch now contains current upstream/main: the head commit is a merge with current main (7328cbf) as its first parent — the same shape as the CI job's synthetic merge commit. The gate's resolvePullRequestBase resolves a merge-commit head to its first parent, and the branch's last main sync (a3e31e1) predates the gate rewrite, so without this merge every CI run would measure the true PR delta plus every main commit since. With current main in the first-parent position, the gate measures the true PR delta only — 5 files, well within the 500-line / 400-mutant caps:
Local preflight on the true delta (7328cbf → d733781): extension: 19 valid / 19 killed / 0 timeout / 0 survived / 0 noCoverage — PASS (local gate green).
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easonLiangWorldedtech
Updated this round (main refresh): merged upstream main (
26331c403). One conflict: both sides added an import from the openrouter fetchers module - this branch'sapplyOpenRouterMoonshotK3Profileand main'sgetOpenRouterModels(new fetch path) - kept together in a single import; the K3 profile re-application at model-consumption time is untouched.Verification at this merge: openrouter provider + fetchers suites 58 passed;
tsc --noEmitclean; ESLint--max-warnings=0clean; Prettier clean on the touched file and on the PR merge commit.