Update OpenAI defaults to GPT-5.5

src/cli/cli-program.ts

@@ -94,7 +94,7 @@ Examples:
   $ bunx oh-my-opencode run --on-complete "notify-send Done" "Fix the bug"
   $ bunx oh-my-opencode run --session-id ses_abc123 "Continue the work"
   $ bunx oh-my-opencode run --model anthropic/claude-sonnet-4 "Fix the bug"
-  $ bunx oh-my-opencode run --agent Sisyphus --model openai/gpt-5.4 "Implement feature X"
+  $ bunx oh-my-opencode run --agent Sisyphus --model openai/gpt-5.5 "Implement feature X"
 
 Agent resolution order:
   1) --agent flag

src/cli/model-fallback.test.ts

@@ -401,7 +401,7 @@ describe("generateModelConfig", () => {
       expect(result.agents?.sisyphus?.model).toBe("anthropic/claude-opus-4-7")
     })
 
-    test("Sisyphus resolves to gpt-5.4 medium when only OpenAI is available", () => {
+    test("Sisyphus resolves to gpt-5.5 medium when only OpenAI is available", () => {
       // #given
       const config = createConfig({ hasOpenAI: true })
 
@@ -409,7 +409,7 @@ describe("generateModelConfig", () => {
       const result = generateModelConfig(config)
 
       // #then
-      expect(result.agents?.sisyphus?.model).toBe("openai/gpt-5.4")
+      expect(result.agents?.sisyphus?.model).toBe("openai/gpt-5.5")
       expect(result.agents?.sisyphus?.variant).toBe("medium")
     })
   })
@@ -423,7 +423,7 @@ describe("generateModelConfig", () => {
       const result = generateModelConfig(config)
 
       // #then
-      expect(result.agents?.atlas?.model).toBe("openai/gpt-5.4")
+      expect(result.agents?.atlas?.model).toBe("openai/gpt-5.5")
       expect(result.agents?.atlas?.variant).toBe("medium")
     })
 
@@ -435,7 +435,7 @@ describe("generateModelConfig", () => {
       const result = generateModelConfig(config)
 
       // #then
-      expect(result.agents?.metis?.model).toBe("openai/gpt-5.4")
+      expect(result.agents?.metis?.model).toBe("openai/gpt-5.5")
       expect(result.agents?.metis?.variant).toBe("high")
     })
 
@@ -447,7 +447,7 @@ describe("generateModelConfig", () => {
       const result = generateModelConfig(config)
 
       // #then
-      expect(result.agents?.["sisyphus-junior"]?.model).toBe("openai/gpt-5.4")
+      expect(result.agents?.["sisyphus-junior"]?.model).toBe("openai/gpt-5.5")
       expect(result.agents?.["sisyphus-junior"]?.variant).toBe("medium")
     })
   })

src/cli/openai-only-model-catalog.test.ts

@@ -40,10 +40,10 @@ describe("generateModelConfig OpenAI-only model catalog", () => {
     const result = generateModelConfig(config)
 
     // #then
-    expect(result.categories?.artistry).toEqual({ model: "openai/gpt-5.4", variant: "xhigh" })
+    expect(result.categories?.artistry).toEqual({ model: "openai/gpt-5.5", variant: "xhigh" })
     expect(result.categories?.quick).toEqual({ model: "openai/gpt-5.4-mini" })
-    expect(result.categories?.["visual-engineering"]).toEqual({ model: "openai/gpt-5.4", variant: "high" })
-    expect(result.categories?.writing).toEqual({ model: "openai/gpt-5.4", variant: "medium" })
+    expect(result.categories?.["visual-engineering"]).toEqual({ model: "openai/gpt-5.5", variant: "high" })
+    expect(result.categories?.writing).toEqual({ model: "openai/gpt-5.5", variant: "medium" })
   })
 
   test("does not apply OpenAI-only overrides when OpenCode Go is also available", () => {

src/cli/openai-only-model-catalog.ts

@@ -6,10 +6,10 @@ const OPENAI_ONLY_AGENT_OVERRIDES: Record<string, AgentConfig> = {
 }
 
 const OPENAI_ONLY_CATEGORY_OVERRIDES: Record<string, CategoryConfig> = {
-  artistry: { model: "openai/gpt-5.4", variant: "xhigh" },
+  artistry: { model: "openai/gpt-5.5", variant: "xhigh" },
   quick: { model: "openai/gpt-5.4-mini" },
-  "visual-engineering": { model: "openai/gpt-5.4", variant: "high" },
-  writing: { model: "openai/gpt-5.4", variant: "medium" },
+  "visual-engineering": { model: "openai/gpt-5.5", variant: "high" },
+  writing: { model: "openai/gpt-5.5", variant: "medium" },
 }
 
 export function isOpenAiOnlyAvailability(availability: ProviderAvailability): boolean {

src/cli/tui-install-prompts.ts

@@ -74,7 +74,7 @@ export async function promptInstallConfig(detected: DetectedConfig): Promise<Ins
     message: "Do you have access to OpenCode Zen (opencode/ models)?",
     options: [
       { value: "no", label: "No", hint: "Will use other configured providers" },
-      { value: "yes", label: "Yes", hint: "opencode/claude-opus-4-7, opencode/gpt-5.4, etc." },
+      { value: "yes", label: "Yes", hint: "opencode/claude-opus-4-7, opencode/gpt-5.5, etc." },
     ],
     initialValue: initial.opencodeZen,
   })