Disable title generation by default

Author: Nifury

packages/opencode/src/config/config.ts

@@ -894,6 +894,12 @@ export namespace Config {
       small_model: ModelId.describe(
         "Small model to use for tasks like title generation in the format of provider/model",
       ).optional(),
+      small_model_enabled: z
+        .boolean()
+        .optional()
+        .describe(
+          "Enable small-model requests such as session title generation. Defaults to false; set to true to opt in.",
+        ),
       default_agent: z
         .string()
         .optional()

packages/opencode/src/session/prompt.ts

@@ -32,6 +32,7 @@ import * as CrossSpawnSpawner from "@/effect/cross-spawn-spawner"
 import * as Stream from "effect/Stream"
 import { Command } from "../command"
 import { pathToFileURL, fileURLToPath } from "url"
+import { Config } from "../config/config"
 import { ConfigMarkdown } from "../config/markdown"
 import { SessionSummary } from "./summary"
 import { NamedError } from "@opencode-ai/util/error"
@@ -86,6 +87,7 @@ export namespace SessionPrompt {
       const sessions = yield* Session.Service
       const agents = yield* Agent.Service
       const provider = yield* Provider.Service
+      const config = yield* Config.Service
       const processor = yield* SessionProcessor.Service
       const compaction = yield* SessionCompaction.Service
       const plugin = yield* Plugin.Service
@@ -1400,13 +1402,17 @@ NOTE: At any point in time through this workflow you should feel free to ask the
             }
 
             step++
-            if (step === 1)
-              yield* title({
-                session,
-                modelID: lastUser.model.modelID,
-                providerID: lastUser.model.providerID,
-                history: msgs,
-              }).pipe(Effect.ignore, Effect.forkIn(scope))
+            if (step === 1) {
+              const cfg = yield* config.get()
+              if (cfg.small_model_enabled) {
+                yield* title({
+                  session,
+                  modelID: lastUser.model.modelID,
+                  providerID: lastUser.model.providerID,
+                  history: msgs,
+                }).pipe(Effect.ignore, Effect.forkIn(scope))
+              }
+            }
 
             const model = yield* getModel(lastUser.model.providerID, lastUser.model.modelID, sessionID)
             const task = tasks.pop()
@@ -1750,6 +1756,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         Layer.provide(Plugin.defaultLayer),
         Layer.provide(Session.defaultLayer),
         Layer.provide(Agent.defaultLayer),
+        Layer.provide(Config.defaultLayer),
         Layer.provide(Bus.layer),
         Layer.provide(CrossSpawnSpawner.defaultLayer),
       ),