- Gateway/agents: avoid rebuilding core tools for plugin-only allowlists and keep the full plugin registry cache warm across scoped plugin loads, reducing per-turn latency spikes. Fixes #75882, #75907, #75906, #75887, and #75851. (#75922) Thanks @obviyus.

- Agents/failover: classify bare `status: internal server error` provider messages as retryable server errors so model fallback can rotate instead of stopping. (#73844) Thanks @thesomewhatyou.

- Gateway/startup: return the shared retryable startup-sidecars error for startup-gated control-plane RPCs such as sessions.create, sessions.send, sessions.abort, agent.wait, and tools.effective, so clients can retry early sidecar races. (#76012) Thanks @scoootscooob.

- Providers/Google: fix Gemini 2.5 Flash-Lite `reasoning: "minimal"` rejections by raising its thinking-budget floor to 512 while preserving the existing Gemini 2.5 Pro and Flash minimal presets. (#70629) Thanks @ericberic.

## 2026.4.30

expect(params.contents).toEqual([{ role: "user", parts: [{ text: " " }] }]);

});

it.each([

["gemini-2.5-flash-lite", "minimal", 512],

["gemini-2.5-flash-lite", "low", 2048],

["gemini-2.5-flash", "minimal", 128],

["gemini-2.5-flash", "low", 2048],

["gemini-2.5-pro", "minimal", 128],

["gemini-2.5-pro", "low", 2048],

["gemini-2.5-flash", "medium", 8192],

["gemini-2.5-pro", "medium", 8192],

] as const)("%s with reasoning=%s uses thinkingBudget %i", (id, reasoning, expectedBudget) => {

const params = buildGoogleGenerativeAiParams(

buildGeminiModel({ id }),

{

messages: [{ role: "user", content: "hello", timestamp: 0 }],

} as never,

{ reasoning },

);

expect(params.generationConfig).toMatchObject({

thinkingConfig: { includeThoughts: true, thinkingBudget: expectedBudget },

});

});

});

if (modelId.includes("2.5-pro")) {

return { minimal: 128, low: 2048, medium: 8192, high: 32768 }[normalizedEffort];

}

if (modelId.includes("2.5-flash-lite")) {

return { minimal: 512, low: 2048, medium: 8192, high: 24576 }[normalizedEffort];

}

if (modelId.includes("2.5-flash")) {

return { minimal: 128, low: 2048, medium: 8192, high: 24576 }[normalizedEffort];

}