feat(modelSpecs): align opencode-go family with upstream provider limits (#2802)

Integrated into release/v3.8.6

src/shared/constants/modelSpecs.ts

@@ -217,10 +217,35 @@ export const MODEL_SPECS: Record<string, ModelSpec> = {
     aliases: ["kimi-k2.6-thinking", "kimi-for-coding"],
   },
 
-  // ── Qwen3.7 Max (Bailian multimodal — text/image/video) ─────────
-  "qwen3.7-max": {
-    maxOutputTokens: 8192,
-    contextWindow: 200000,
+  // ── Kimi K2.5 (Moonshot — 262K native, parity with K2.6) ────────
+  "kimi-k2.5": {
+    maxOutputTokens: 262144,
+    contextWindow: 262144,
+    supportsThinking: true,
+    supportsTools: true,
+    supportsVision: true,
+    aliases: ["kimi-k2.5-thinking"],
+  },
+
+  // ── Qwen3.x Plus / Max (Bailian — multimodal text/image/video, 1M context) ─
+  "qwen3-max": {
+    maxOutputTokens: 65536,
+    contextWindow: 1000000,
+    supportsThinking: true,
+    supportsTools: true,
+    supportsVision: true,
+    aliases: ["qwen3.7-max", "qwen3-max-2026-01-23"],
+  },
+  "qwen3.6-plus": {
+    maxOutputTokens: 65536,
+    contextWindow: 1000000,
+    supportsThinking: true,
+    supportsTools: true,
+    supportsVision: true,
+  },
+  "qwen3.5-plus": {
+    maxOutputTokens: 65536,
+    contextWindow: 1000000,
     supportsThinking: true,
     supportsTools: true,
     supportsVision: true,
@@ -257,6 +282,57 @@ export const MODEL_SPECS: Record<string, ModelSpec> = {
     supportsTools: true,
   },
 
+  // ── Z.AI GLM-5.x (200K context, 128K max output) ─────────────────
+  "glm-5.1": {
+    maxOutputTokens: 128000,
+    contextWindow: 200000,
+    supportsThinking: true,
+    supportsTools: true,
+  },
+  "glm-5": {
+    maxOutputTokens: 128000,
+    contextWindow: 200000,
+    supportsThinking: true,
+    supportsTools: true,
+  },
+
+  // ── MiniMax M2.x (200K context family) ───────────────────────────
+  "minimax-m2.7": {
+    maxOutputTokens: 131072,
+    contextWindow: 204800,
+    supportsThinking: true,
+    supportsTools: true,
+  },
+  "minimax-m2.5": {
+    maxOutputTokens: 131072,
+    contextWindow: 200000,
+    supportsThinking: true,
+    supportsTools: true,
+    aliases: ["MiniMax-M2.5"],
+  },
+
+  // ── DeepSeek V4 (1M context, 384K max output) ────────────────────
+  "deepseek-v4-pro": {
+    maxOutputTokens: 384000,
+    contextWindow: 1000000,
+    supportsThinking: true,
+    supportsTools: true,
+  },
+  "deepseek-v4-flash": {
+    maxOutputTokens: 384000,
+    contextWindow: 1000000,
+    supportsThinking: true,
+    supportsTools: true,
+  },
+
+  // ── Tencent Hunyuan 3 Preview ────────────────────────────────────
+  "hy3-preview": {
+    maxOutputTokens: 262144,
+    contextWindow: 262144,
+    supportsThinking: true,
+    supportsTools: true,
+  },
+
   // Defaults
   __default__: {
     maxOutputTokens: 8192,

tests/unit/t31-t33-t34-t38-model-specs.test.ts

@@ -82,3 +82,53 @@ test("T38: MiMo V2.5 and V2 Omni models support vision", () => {
   assert.equal(MODEL_SPECS["mimo-v2-omni"].supportsVision, true);
   assert.equal(MODEL_SPECS["mimo-v2-flash"].supportsVision, undefined);
 });
+
+test("opencode-go family: context/output caps match upstream provider docs", () => {
+  // Qwen3.x Plus / Max: 1M context, 65K output (Bailian)
+  assert.equal(getModelSpec("qwen3-max").contextWindow, 1000000);
+  assert.equal(getModelSpec("qwen3-max").maxOutputTokens, 65536);
+  assert.equal(getModelSpec("qwen3.7-max").contextWindow, 1000000);
+  assert.equal(getModelSpec("qwen3-max-2026-01-23").contextWindow, 1000000);
+  assert.equal(getModelSpec("qwen3.6-plus").contextWindow, 1000000);
+  assert.equal(getModelSpec("qwen3.6-plus").maxOutputTokens, 65536);
+  assert.equal(getModelSpec("qwen3.5-plus").contextWindow, 1000000);
+  assert.equal(getModelSpec("qwen3.5-plus").maxOutputTokens, 65536);
+
+  // Kimi K2.5: 262K context/output (Moonshot, parity with K2.6)
+  assert.equal(getModelSpec("kimi-k2.5").contextWindow, 262144);
+  assert.equal(getModelSpec("kimi-k2.5").maxOutputTokens, 262144);
+
+  // GLM-5.x: 200K context, 128K output (Z.AI)
+  assert.equal(getModelSpec("glm-5.1").contextWindow, 200000);
+  assert.equal(getModelSpec("glm-5.1").maxOutputTokens, 128000);
+  assert.equal(getModelSpec("glm-5").contextWindow, 200000);
+
+  // MiniMax M2.x: ~200K context, 131K output
+  assert.equal(getModelSpec("minimax-m2.7").contextWindow, 204800);
+  assert.equal(getModelSpec("minimax-m2.7").maxOutputTokens, 131072);
+  assert.equal(getModelSpec("minimax-m2.5").contextWindow, 200000);
+  assert.equal(getModelSpec("MiniMax-M2.5").contextWindow, 200000);
+
+  // DeepSeek V4: 1M context, 384K output
+  assert.equal(getModelSpec("deepseek-v4-pro").contextWindow, 1000000);
+  assert.equal(getModelSpec("deepseek-v4-pro").maxOutputTokens, 384000);
+  assert.equal(getModelSpec("deepseek-v4-flash").contextWindow, 1000000);
+
+  // Tencent Hunyuan 3 Preview: 262K context/output
+  assert.equal(getModelSpec("hy3-preview").contextWindow, 262144);
+  assert.equal(getModelSpec("hy3-preview").maxOutputTokens, 262144);
+});
+
+test("opencode-go family: capMaxOutputTokens grants full upstream budget", () => {
+  // Without explicit specs these models would fall back to __default__ (8192).
+  // Assert they now receive the real upstream cap.
+  assert.equal(capMaxOutputTokens("qwen3-max", 100000), 65536);
+  assert.equal(capMaxOutputTokens("qwen3.7-max", 100000), 65536);
+  assert.equal(capMaxOutputTokens("qwen3-max-2026-01-23", 100000), 65536);
+  assert.equal(capMaxOutputTokens("kimi-k2.5", 300000), 262144);
+  assert.equal(capMaxOutputTokens("glm-5.1", 200000), 128000);
+  assert.equal(capMaxOutputTokens("minimax-m2.7", 200000), 131072);
+  assert.equal(capMaxOutputTokens("MiniMax-M2.5", 200000), 131072);
+  assert.equal(capMaxOutputTokens("deepseek-v4-pro", 500000), 384000);
+  assert.equal(capMaxOutputTokens("hy3-preview", 300000), 262144);
+});