fix(provider): scope DeepSeek V4 Flash sampling defaults (#41620)

Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>
Co-authored-by: 侯秀凯 <9627034+hoooou@users.noreply.github.com>

packages/app/src/context/global-sync/utils.test.ts

@@ -103,6 +103,7 @@ describe("normalizeProviderList", () => {
     )
 
     expect(result.connected).toEqual(["openai"])
+    expect(result.defaultModel).toEqual({ providerID: "openai", modelID: "gpt-5" })
     expect(result.default).toEqual({ openai: "gpt-5" })
     expect(result.all.get("openai")?.models["gpt-old"]).toBeUndefined()
     expect(result.all.get("openai")?.models["gpt-5"]).toMatchObject({
@@ -113,6 +114,10 @@ describe("normalizeProviderList", () => {
       variants: { high: {} },
     })
   })
+
+  test("preserves an empty current default", () => {
+    expect(normalizeProviderList([] as ProviderListOutput["data"], [], null).defaultModel).toBeNull()
+  })
 })
 
 describe("directoryKey", () => {

packages/app/src/context/global-sync/utils.ts

@@ -139,6 +139,7 @@ export function normalizeProviderList(
   return {
     all,
     connected: providers.map((provider) => provider.id),
+    defaultModel: defaultModel ? { providerID: defaultModel.providerID, modelID: defaultModel.id } : null,
     default: Object.fromEntries(
       providers.flatMap((provider) => {
         const model =

packages/app/src/context/local.tsx

@@ -6,6 +6,7 @@ import { createStore } from "solid-js/store"
 import { useModels } from "@/context/models"
 import { useSettings } from "@/context/settings"
 import { useProviders } from "@/hooks/use-providers"
+import { resolveDefaultModel } from "@/hooks/provider-catalog"
 import { Persist, persisted } from "@/utils/persist"
 import { hasCustomAgent, resolveAgent } from "./local-agent"
 import { cycleModelVariant, getConfiguredAgentVariant, resolveModelVariant } from "./model-variant"
@@ -149,10 +150,8 @@ export const { use: useLocal, provider: LocalProvider } = createSimpleContext({
     })
 
     const configuredModel = () => {
-      const configured = sync().data.config.model
-      if (!configured) return
-      const [providerID, modelID] = configured.split("/")
-      const model = { providerID, modelID }
+      const model = resolveDefaultModel(providers.defaultModel(), sync().data.config.model)
+      if (!model) return
       if (validModel(model)) return model
     }
 

packages/app/src/hooks/provider-catalog.test.ts

@@ -1,6 +1,6 @@
 import { expect, test } from "bun:test"
 import type { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
-import { selectProviderCatalog } from "./provider-catalog"
+import { resolveDefaultModel, selectProviderCatalog } from "./provider-catalog"
 
 const catalog = (id: string): NormalizedProviderListResponse => ({
   all: new Map([[id, { id, name: id, source: "api", env: [], options: {}, models: {} }]]),
@@ -57,3 +57,21 @@ test("falls back to the global catalog for route consumers", () => {
     }),
   ).toBe(global)
 })
+
+test("uses the current server default model", () => {
+  expect(resolveDefaultModel({ providerID: "openai", modelID: "gpt-5" }, "anthropic/claude")).toEqual({
+    providerID: "openai",
+    modelID: "gpt-5",
+  })
+})
+
+test("does not use legacy config when the current server has no default", () => {
+  expect(resolveDefaultModel(null, "anthropic/claude")).toBeUndefined()
+})
+
+test("uses config for legacy servers", () => {
+  expect(resolveDefaultModel(undefined, "anthropic/claude")).toEqual({
+    providerID: "anthropic",
+    modelID: "claude",
+  })
+})

packages/app/src/hooks/provider-catalog.ts

@@ -25,3 +25,13 @@ export function selectProviderCatalog(input: ProviderCatalogInput) {
   if (input.explicit) return emptyProviderCatalog
   return input.global
 }
+
+export function resolveDefaultModel(
+  current: NormalizedProviderListResponse["defaultModel"],
+  legacy: string | undefined,
+) {
+  if (current !== undefined) return current ?? undefined
+  if (!legacy) return undefined
+  const [providerID, modelID] = legacy.split("/")
+  return { providerID, modelID }
+}

packages/app/src/hooks/use-providers.ts

@@ -41,6 +41,7 @@ export function useProviders(directory: Accessor<string | undefined>) {
   return {
     all: () => providers().all,
     default: () => providers().default,
+    defaultModel: () => providers().defaultModel,
     popular: () =>
       pipe(
         providers().all,

packages/app/src/i18n/zh.ts

@@ -583,7 +583,7 @@ export const dict = {
   "dialog.usageExceeded.dontShowAgain": "不再显示",
 
   "context.breakdown.title": "上下文细分",
-  "context.breakdown.note": "输入词元的大致细分。“其他”包含工具定义和开销。",
+  "context.breakdown.note": "输入 token 的大致细分。“其他”包含工具定义和开销。",
   "context.breakdown.system": "系统",
   "context.breakdown.user": "用户",
   "context.breakdown.assistant": "助手",
@@ -598,18 +598,18 @@ export const dict = {
   "context.stats.provider": "提供商",
   "context.stats.model": "模型",
   "context.stats.limit": "上下文限制",
-  "context.stats.totalTokens": "词元总数",
+  "context.stats.totalTokens": "总 token",
   "context.stats.usage": "使用率",
-  "context.stats.inputTokens": "输入词元",
-  "context.stats.outputTokens": "输出词元",
-  "context.stats.reasoningTokens": "推理词元",
-  "context.stats.cacheTokens": "缓存词元（读/写）",
+  "context.stats.inputTokens": "输入 token",
+  "context.stats.outputTokens": "输出 token",
+  "context.stats.reasoningTokens": "推理 token",
+  "context.stats.cacheTokens": "缓存 token（读/写）",
   "context.stats.userMessages": "用户消息",
   "context.stats.assistantMessages": "助手消息",
   "context.stats.totalCost": "总成本",
   "context.stats.sessionCreated": "创建时间",
   "context.stats.lastActivity": "最后活动",
-  "context.usage.tokens": "词元数",
+  "context.usage.tokens": "Token",
   "context.usage.usage": "使用率",
   "context.usage.cost": "成本",
   "context.usage.clickToView": "点击查看上下文",

packages/app/src/pages/session/composer/prompt-model-selection.ts

@@ -6,6 +6,7 @@ import { usePrompt } from "@/context/prompt"
 import { useSDK } from "@/context/sdk"
 import { useSync } from "@/context/sync"
 import { useProviders } from "@/hooks/use-providers"
+import { resolveDefaultModel } from "@/hooks/provider-catalog"
 
 export function createPromptModelSelection(input: { agent: () => { model?: ModelKey; variant?: string } | undefined }) {
   const sdk = useSDK()
@@ -21,10 +22,8 @@ export function createPromptModelSelection(input: { agent: () => { model?: Model
   }
 
   const configured = () => {
-    const value = sync().data.config.model
-    if (!value) return
-    const [providerID, modelID] = value.split("/")
-    const model = { providerID, modelID }
+    const model = resolveDefaultModel(providers.defaultModel(), sync().data.config.model)
+    if (!model) return
     if (valid(model)) return model
   }
 

packages/opencode/src/provider/transform.ts

@@ -551,6 +551,12 @@ export function topP(model: Provider.Model) {
   if (["minimax-m2", "kimi-k2.5", "kimi-k2p5", "kimi-k2-5"].some((s) => id.includes(s))) {
     return 0.95
   }
+  if (
+    ["deepseek-v4-flash-0731", "deepseek-v4-flash:0731"].some((name) => id.includes(name)) ||
+    (id.includes("deepseek-v4-flash") && (model.providerID === "deepseek" || model.providerID.startsWith("opencode")))
+  ) {
+    return 0.95
+  }
   return undefined
 }
 

packages/opencode/src/session/prompt/meta.txt

@@ -1,4 +1,4 @@
-You are OpenCode, a coding agent that helps users with software engineering tasks. You are powered by Muse Spark, a large language model trained by Meta MSL.
+You are OpenCode, a coding agent that helps users with software engineering tasks. You are powered by {{MODEL_NAME}}, a large language model trained by Meta MSL.
 
 Use the instructions below and the tools available to assist the user.
 
@@ -61,5 +61,5 @@ Use the instructions below and the tools available to assist the user.
 - NEVER use comments as a place for long-winded chain-of-thought. Long thinking texts must be generated as private reasoning. Comments in code must be appropriately concise.
 
 # User Help & Feedback
-- Users can give feedback or report issues at https://github.com/anomalyco/opencode and mention that they are using Meta Muse Spark.
+- Users can give feedback or report issues at https://github.com/anomalyco/opencode and mention that they are using Meta {{MODEL_NAME}}.
 - When users ask directly about OpenCode (eg. "can OpenCode do...", "are you able to do...") or its features (eg. implement a hook, write a slash command, or install an MCP server), use the WebFetch tool to gather information to answer the question from the OpenCode docs at https://opencode.ai/docs.

packages/opencode/src/session/system.ts

@@ -25,7 +25,10 @@ import { MCP } from "@/mcp"
 import { PermissionV1 } from "@opencode-ai/core/v1/permission"
 
 export function provider(model: Provider.Model) {
-  if (model.api.id.includes("muse-spark")) return [PROMPT_META]
+  if (model.api.id.includes("muse")) {
+    const name = model.api.id.includes("muse-glimmer") ? "Muse Glimmer" : "Muse Spark"
+    return [PROMPT_META.replaceAll("{{MODEL_NAME}}", name)]
+  }
   if (model.api.id.includes("gpt-4") || model.api.id.includes("o1") || model.api.id.includes("o3"))
     return [PROMPT_BEAST]
   if (model.api.id.includes("gpt")) {

packages/opencode/test/provider/transform.test.ts

@@ -3272,6 +3272,37 @@ describe("ProviderTransform sampling defaults - Gemini", () => {
   })
 })
 
+describe("ProviderTransform sampling defaults - DeepSeek", () => {
+  const model = (providerID: string, id: string) =>
+    ({
+      id: `${providerID}/${id}`,
+      providerID,
+      api: { id },
+    }) as any
+
+  test.each([
+    ["deepseek", "deepseek-v4-flash"],
+    ["opencode", "deepseek-v4-flash"],
+    ["opencode-go", "deepseek-v4-flash"],
+    ["openrouter", "deepseek/deepseek-v4-flash-0731"],
+    ["ollama-cloud", "deepseek-v4-flash:0731"],
+  ])("defaults top_p for %s/%s", (providerID, id) => {
+    expect(ProviderTransform.temperature(model(providerID, id))).toBeUndefined()
+    expect(ProviderTransform.topP(model(providerID, id))).toBe(0.95)
+    expect(ProviderTransform.topK(model(providerID, id))).toBeUndefined()
+  })
+
+  test.each([
+    ["openrouter", "deepseek/deepseek-v4-flash"],
+    ["vercel", "deepseek/deepseek-v4-flash"],
+    ["custom", "deepseek-ai/DeepSeek-V4-Flash"],
+  ])("preserves legacy defaults for %s/%s", (providerID, id) => {
+    expect(ProviderTransform.temperature(model(providerID, id))).toBeUndefined()
+    expect(ProviderTransform.topP(model(providerID, id))).toBeUndefined()
+    expect(ProviderTransform.topK(model(providerID, id))).toBeUndefined()
+  })
+})
+
 describe("ProviderTransform.reasoningVariants", () => {
   const model = (reasoning_options: ModelsDev.Model["reasoning_options"]) => ({ reasoning_options }) as ModelsDev.Model
   const target = (npm: string, id = "test-model") =>

packages/opencode/test/session/system.test.ts

@@ -85,9 +85,21 @@ const it = testEffect(
 
 describe("session.system", () => {
   test("selects the Meta prompt for Muse Spark model IDs", () => {
-    expect(SystemPrompt.provider({ api: { id: "meta/muse-spark-preview" } } as Provider.Model)[0]).toContain(
-      "Meta Muse Spark",
-    )
+    for (const id of ["meta/muse-spark-preview", "muse-spark-1.1", "muse-spark-1.2"]) {
+      const prompt = SystemPrompt.provider({ api: { id } } as Provider.Model)[0]
+      expect(prompt).toContain("powered by Muse Spark,")
+      expect(prompt).toContain("using Meta Muse Spark.")
+      expect(prompt).not.toContain("{{MODEL_NAME}}")
+    }
+  })
+
+  test("selects the Meta prompt for Muse Glimmer model IDs", () => {
+    for (const id of ["meta/muse-glimmer", "meta/muse-glimmer-30b", "muse-glimmer-30b"]) {
+      const prompt = SystemPrompt.provider({ api: { id } } as Provider.Model)[0]
+      expect(prompt).toContain("powered by Muse Glimmer,")
+      expect(prompt).toContain("using Meta Muse Glimmer.")
+      expect(prompt).not.toContain("{{MODEL_NAME}}")
+    }
   })
 
   it.effect("skills output is sorted by name and stable across calls", () =>

packages/session-ui/src/context/data.tsx

@@ -5,6 +5,10 @@ import { PreloadMultiFileDiffResult } from "@pierre/diffs/ssr"
 
 export type NormalizedProviderListResponse = {
   all: Map<string, Provider>
+  defaultModel?: {
+    providerID: string
+    modelID: string
+  } | null
   default: {
     [key: string]: string
   }

packages/ui/src/theme/themes/oc-2.json

@@ -25,7 +25,7 @@
       "border-weak-base": "#DBDBDB",
       "border-weaker-base": "#E8E8E8",
       "icon-base": "#8F8F8F",
-      "icon-weak-base": "C7C7C7",
+      "icon-weak-base": "#C7C7C7",
       "surface-raised-base": "#F3F3F3",
       "surface-raised-base-hover": "#EDEDED",
       "surface-base": "#F8F8F8",