fix(ai): handle OpenCode Kimi reasoning params

packages/ai/scripts/generate-models.ts

@@ -905,6 +905,12 @@ async function loadModelsDevData(): Promise<Model<any>[]> {
 					compat = { ...(compat ?? {}), supportsReasoningEffort: false };
 				}
 
+				if ((variant.provider === "opencode" || variant.provider === "opencode-go") && modelId === "kimi-k2.6") {
+					// OpenCode Kimi K2.6 accepts Anthropic-style thinking objects
+					// and rejects string thinking values or combined reasoning_effort.
+					compat = { ...(compat ?? {}), thinkingFormat: "deepseek", supportsReasoningEffort: false };
+				}
+
 				// Fix known mismatches between models.dev npm data and actual
 				// OpenCode Go endpoint behaviour. models.dev reports these models
 				// as @ai-sdk/anthropic, but the OpenCode Go endpoints either don't
@@ -917,11 +923,6 @@ async function loadModelsDevData(): Promise<Model<any>[]> {
 						api = "openai-completions";
 						baseUrl = `${variant.basePath}/v1`;
 					}
-					if (modelId === "kimi-k2.6") {
-						// OpenCode Go Kimi K2.6 accepts Anthropic-style thinking objects
-						// and rejects string thinking values or combined reasoning_effort.
-						compat = { ...(compat ?? {}), thinkingFormat: "deepseek", supportsReasoningEffort: false };
-					}
 					if (modelId === "qwen3.5-plus" || modelId === "qwen3.6-plus") {
 						api = "openai-completions";
 						baseUrl = `${variant.basePath}/v1`;

packages/ai/src/models.generated.ts

@@ -3868,8 +3868,8 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 144000,
+			contextWindow: 200000,
-			maxTokens: 32000,
+			maxTokens: 64000,
 		} satisfies Model<"anthropic-messages">,
 		"claude-opus-4.5": {
 			id: "claude-opus-4.5",
@@ -3886,7 +3886,7 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 160000,
+			contextWindow: 200000,
 			maxTokens: 32000,
 		} satisfies Model<"anthropic-messages">,
 		"claude-opus-4.6": {
@@ -3907,7 +3907,7 @@ export const MODELS = {
 				cacheWrite: 0,
 			},
 			contextWindow: 1000000,
-			maxTokens: 64000,
+			maxTokens: 32000,
 		} satisfies Model<"anthropic-messages">,
 		"claude-opus-4.7": {
 			id: "claude-opus-4.7",
@@ -3926,7 +3926,27 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 144000,
+			contextWindow: 200000,
+			maxTokens: 32000,
+		} satisfies Model<"anthropic-messages">,
+		"claude-opus-4.8": {
+			id: "claude-opus-4.8",
+			name: "Claude Opus 4.8",
+			api: "anthropic-messages",
+			provider: "github-copilot",
+			baseUrl: "https://api.individual.githubcopilot.com",
+			headers: {"User-Agent":"GitHubCopilotChat/0.35.0","Editor-Version":"vscode/1.107.0","Editor-Plugin-Version":"copilot-chat/0.35.0","Copilot-Integration-Id":"vscode-chat"},
+			compat: {"forceAdaptiveThinking":true},
+			reasoning: true,
+			thinkingLevelMap: {"xhigh":"xhigh"},
+			input: ["text", "image"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 200000,
 			maxTokens: 64000,
 		} satisfies Model<"anthropic-messages">,
 		"claude-sonnet-4.5": {
@@ -3945,7 +3965,7 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 144000,
+			contextWindow: 200000,
 			maxTokens: 32000,
 		} satisfies Model<"anthropic-messages">,
 		"claude-sonnet-4.6": {
@@ -4021,7 +4041,7 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 128000,
+			contextWindow: 200000,
 			maxTokens: 64000,
 		} satisfies Model<"openai-completions">,
 		"gemini-3.5-flash": {
@@ -4040,7 +4060,7 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 128000,
+			contextWindow: 200000,
 			maxTokens: 64000,
 		} satisfies Model<"openai-completions">,
 		"gpt-4.1": {
@@ -4116,8 +4136,8 @@ export const MODELS = {
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 264000,
+			contextWindow: 400000,
-			maxTokens: 64000,
+			maxTokens: 128000,
 		} satisfies Model<"openai-responses">,
 		"gpt-5.2-codex": {
 			id: "gpt-5.2-codex",
@@ -7724,7 +7744,9 @@ export const MODELS = {
 			api: "openai-completions",
 			provider: "opencode",
 			baseUrl: "https://opencode.ai/zen/v1",
+			compat: {"supportsReasoningEffort":false},
 			reasoning: true,
+			thinkingLevelMap: {"off":null,"minimal":null,"low":null,"medium":null},
 			input: ["text", "image"],
 			cost: {
 				input: 1,
@@ -7758,6 +7780,7 @@ export const MODELS = {
 			api: "openai-completions",
 			provider: "opencode",
 			baseUrl: "https://opencode.ai/zen/v1",
+			compat: {"thinkingFormat":"deepseek","supportsReasoningEffort":false},
 			reasoning: true,
 			input: ["text", "image"],
 			cost: {
@@ -7968,9 +7991,9 @@ export const MODELS = {
 			api: "openai-completions",
 			provider: "opencode-go",
 			baseUrl: "https://opencode.ai/zen/go/v1",
-			compat: {"thinkingFormat":"string-thinking"},
+			compat: {"thinkingFormat":"deepseek","supportsReasoningEffort":false},
 			reasoning: true,
-			thinkingLevelMap: {"off":"none"},
+			thinkingLevelMap: {"minimal":null,"low":null,"medium":null},
 			input: ["text", "image"],
 			cost: {
 				input: 0.95,
@@ -8049,24 +8072,6 @@ export const MODELS = {
 			contextWindow: 204800,
 			maxTokens: 131072,
 		} satisfies Model<"openai-completions">,
-		"qwen3.5-plus": {
-			id: "qwen3.5-plus",
-			name: "Qwen3.5 Plus",
-			api: "openai-completions",
-			provider: "opencode-go",
-			baseUrl: "https://opencode.ai/zen/go/v1",
-			compat: {"thinkingFormat":"qwen"},
-			reasoning: true,
-			input: ["text", "image"],
-			cost: {
-				input: 0.2,
-				output: 1.2,
-				cacheRead: 0.02,
-				cacheWrite: 0.25,
-			},
-			contextWindow: 262144,
-			maxTokens: 65536,
-		} satisfies Model<"openai-completions">,
 		"qwen3.6-plus": {
 			id: "qwen3.6-plus",
 			name: "Qwen3.6 Plus",
@@ -8818,13 +8823,13 @@ export const MODELS = {
 			thinkingLevelMap: {"minimal":null,"low":null,"medium":null,"high":"high","xhigh":"xhigh"},
 			input: ["text"],
 			cost: {
-				input: 0.09999999999999999,
+				input: 0.0983,
-				output: 0.19999999999999998,
+				output: 0.1966,
-				cacheRead: 0.02,
+				cacheRead: 0.019700000000000002,
 				cacheWrite: 0,
 			},
 			contextWindow: 1048576,
-			maxTokens: 16384,
+			maxTokens: 131072,
 		} satisfies Model<"openai-completions">,
 		"deepseek/deepseek-v4-flash:free": {
 			id: "deepseek/deepseek-v4-flash:free",
@@ -8895,7 +8900,7 @@ export const MODELS = {
 				cacheRead: 0.024999999999999998,
 				cacheWrite: 0.08333333333333334,
 			},
-			contextWindow: 1000000,
+			contextWindow: 1048576,
 			maxTokens: 8192,
 		} satisfies Model<"openai-completions">,
 		"google/gemini-2.0-flash-lite-001": {
@@ -9945,13 +9950,13 @@ export const MODELS = {
 			reasoning: true,
 			input: ["text", "image"],
 			cost: {
-				input: 0.73,
+				input: 0.684,
-				output: 3.49,
+				output: 3.42,
-				cacheRead: 0.25,
+				cacheRead: 0.144,
 				cacheWrite: 0,
 			},
 			contextWindow: 262144,
-			maxTokens: 262142,
+			maxTokens: 262144,
 		} satisfies Model<"openai-completions">,
 		"moonshotai/kimi-k2.6:free": {
 			id: "moonshotai/kimi-k2.6:free",
@@ -12090,6 +12095,23 @@ export const MODELS = {
 			contextWindow: 262144,
 			maxTokens: 16384,
 		} satisfies Model<"openai-completions">,
+		"stepfun/step-3.7-flash": {
+			id: "stepfun/step-3.7-flash",
+			name: "StepFun: Step 3.7 Flash",
+			api: "openai-completions",
+			provider: "openrouter",
+			baseUrl: "https://openrouter.ai/api/v1",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 0.19999999999999998,
+				output: 1.15,
+				cacheRead: 0.04,
+				cacheWrite: 0,
+			},
+			contextWindow: 256000,
+			maxTokens: 256000,
+		} satisfies Model<"openai-completions">,
 		"tencent/hy3-preview": {
 			id: "tencent/hy3-preview",
 			name: "Tencent: Hy3 preview",
@@ -12609,13 +12631,13 @@ export const MODELS = {
 			reasoning: true,
 			input: ["text", "image"],
 			cost: {
-				input: 0.73,
+				input: 0.684,
-				output: 3.49,
+				output: 3.42,
-				cacheRead: 0.25,
+				cacheRead: 0.144,
 				cacheWrite: 0,
 			},
 			contextWindow: 262144,
-			maxTokens: 262142,
+			maxTokens: 262144,
 		} satisfies Model<"openai-completions">,
 		"~openai/gpt-latest": {
 			id: "~openai/gpt-latest",
@@ -13013,20 +13035,20 @@ export const MODELS = {
 		} satisfies Model<"anthropic-messages">,
 		"alibaba/qwen-3-235b": {
 			id: "alibaba/qwen-3-235b",
-			name: "Qwen3 235B A22b Instruct 2507",
+			name: "Qwen3 235B A22B",
 			api: "anthropic-messages",
 			provider: "vercel-ai-gateway",
 			baseUrl: "https://ai-gateway.vercel.sh",
 			reasoning: false,
 			input: ["text"],
 			cost: {
-				input: 0.6,
+				input: 0.22,
-				output: 1.2,
+				output: 0.88,
-				cacheRead: 0.6,
+				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 131000,
+			contextWindow: 262144,
-			maxTokens: 40000,
+			maxTokens: 16384,
 		} satisfies Model<"anthropic-messages">,
 		"alibaba/qwen-3-30b": {
 			id: "alibaba/qwen-3-30b",