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mdesmetclaude
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claude
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feat: default to altimate-backend model when configured
When no model is explicitly configured and no recently-used model exists, prefer altimate-backend/altimate-default as the default model if altimate credentials are present. This applies to both the main Provider.defaultModel() and the ACP agent defaultModel() fallback chains. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
1 parent b66d9f5 commit a713809

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‎packages/opencode/src/acp/agent.ts‎

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@@ -1577,6 +1577,16 @@ export namespace ACP {
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if (specified && !providers.length) return specified
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// altimate_change start — default to altimate-backend when configured and no model chosen yet
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const altimateProvider = providers.find((p) => p.id === "altimate-backend")
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if (altimateProvider && altimateProvider.models["altimate-default"]) {
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return {
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providerID: ProviderID.make("altimate-backend"),
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modelID: ModelID.make("altimate-default"),
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}
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}
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// altimate_change end
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const opencodeProvider = providers.find((p) => p.id === "opencode")
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if (opencodeProvider) {
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if (opencodeProvider.models["big-pickle"]) {

‎packages/opencode/src/provider/provider.ts‎

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@@ -1637,6 +1637,16 @@ export namespace Provider {
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return { providerID: entry.providerID, modelID: entry.modelID }
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}
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// altimate_change start — default to altimate-backend when configured and no model chosen yet
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const altimateProvider = providers[ProviderID.make("altimate-backend")]
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if (altimateProvider && altimateProvider.models[ModelID.make("altimate-default")]) {
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return {
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providerID: ProviderID.make("altimate-backend"),
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modelID: ModelID.make("altimate-default"),
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}
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}
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// altimate_change end
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const provider = Object.values(providers).find((p) => !cfg.provider || Object.keys(cfg.provider).includes(p.id))
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if (!provider) throw new Error("no providers found")
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const [model] = sort(Object.values(provider.models))

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

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@@ -1,11 +1,13 @@
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import { test, expect } from "bun:test"
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import path from "path"
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import fs from "fs/promises"
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import { tmpdir } from "../fixture/fixture"
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import { Instance } from "../../src/project/instance"
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import { Provider } from "../../src/provider/provider"
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import { ProviderID, ModelID } from "../../src/provider/schema"
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import { Env } from "../../src/env"
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import { Global } from "../../src/global"
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test("provider loaded from env variable", async () => {
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await using tmp = await tmpdir({
@@ -2330,4 +2332,155 @@ test("github-copilot is excluded when CODESPACES=true and only GITHUB_TOKEN is s
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},
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})
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})
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// altimate_change start — tests for altimate-backend default model preference
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test("defaultModel returns altimate-backend when altimate credentials exist and no model configured", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(
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path.join(dir, "opencode.json"),
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JSON.stringify({
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$schema: "https://altimate.ai/config.json",
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}),
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)
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},
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})
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const originalHome = process.env.OPENCODE_TEST_HOME
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process.env.OPENCODE_TEST_HOME = tmp.path
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const altimateDir = path.join(tmp.path, ".altimate")
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await fs.mkdir(altimateDir, { recursive: true })
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await Bun.write(
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path.join(altimateDir, "altimate.json"),
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JSON.stringify({
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altimateUrl: "https://test.altimate.ai",
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altimateInstanceName: "test-instance",
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altimateApiKey: "test-api-key",
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}),
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)
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try {
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const model = await Provider.defaultModel()
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expect(String(model.providerID)).toBe("altimate-backend")
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expect(String(model.modelID)).toBe("altimate-default")
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},
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})
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} finally {
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process.env.OPENCODE_TEST_HOME = originalHome
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}
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})
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test("defaultModel prefers altimate-backend over other providers when altimate is configured", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(
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path.join(dir, "opencode.json"),
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JSON.stringify({
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$schema: "https://altimate.ai/config.json",
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}),
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)
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},
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})
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const originalHome = process.env.OPENCODE_TEST_HOME
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process.env.OPENCODE_TEST_HOME = tmp.path
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const altimateDir = path.join(tmp.path, ".altimate")
2388+
await fs.mkdir(altimateDir, { recursive: true })
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await Bun.write(
2390+
path.join(altimateDir, "altimate.json"),
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JSON.stringify({
2392+
altimateUrl: "https://test.altimate.ai",
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altimateInstanceName: "test-instance",
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altimateApiKey: "test-api-key",
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}),
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)
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try {
2398+
await Instance.provide({
2399+
directory: tmp.path,
2400+
init: async () => {
2401+
Env.set("ANTHROPIC_API_KEY", "test-api-key")
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},
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fn: async () => {
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const providers = await Provider.list()
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// Both providers should be available
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expect(providers["anthropic"]).toBeDefined()
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expect(providers["altimate-backend"]).toBeDefined()
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// But defaultModel should prefer altimate-backend
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const model = await Provider.defaultModel()
2410+
expect(String(model.providerID)).toBe("altimate-backend")
2411+
expect(String(model.modelID)).toBe("altimate-default")
2412+
},
2413+
})
2414+
} finally {
2415+
process.env.OPENCODE_TEST_HOME = originalHome
2416+
}
2417+
})
2418+
2419+
test("defaultModel respects explicit config model over altimate-backend", async () => {
2420+
await using tmp = await tmpdir({
2421+
init: async (dir) => {
2422+
await Bun.write(
2423+
path.join(dir, "opencode.json"),
2424+
JSON.stringify({
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$schema: "https://altimate.ai/config.json",
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model: "anthropic/claude-sonnet-4-20250514",
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}),
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)
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},
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})
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const originalHome = process.env.OPENCODE_TEST_HOME
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process.env.OPENCODE_TEST_HOME = tmp.path
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const altimateDir = path.join(tmp.path, ".altimate")
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await fs.mkdir(altimateDir, { recursive: true })
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await Bun.write(
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path.join(altimateDir, "altimate.json"),
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JSON.stringify({
2438+
altimateUrl: "https://test.altimate.ai",
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altimateInstanceName: "test-instance",
2440+
altimateApiKey: "test-api-key",
2441+
}),
2442+
)
2443+
try {
2444+
await Instance.provide({
2445+
directory: tmp.path,
2446+
init: async () => {
2447+
Env.set("ANTHROPIC_API_KEY", "test-api-key")
2448+
},
2449+
fn: async () => {
2450+
const model = await Provider.defaultModel()
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expect(String(model.providerID)).toBe("anthropic")
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expect(String(model.modelID)).toBe("claude-sonnet-4-20250514")
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},
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})
2455+
} finally {
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process.env.OPENCODE_TEST_HOME = originalHome
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}
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})
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2460+
test("defaultModel falls through to other providers when altimate is not configured", async () => {
2461+
await using tmp = await tmpdir({
2462+
init: async (dir) => {
2463+
await Bun.write(
2464+
path.join(dir, "opencode.json"),
2465+
JSON.stringify({
2466+
$schema: "https://altimate.ai/config.json",
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}),
2468+
)
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},
2470+
})
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await Instance.provide({
2472+
directory: tmp.path,
2473+
init: async () => {
2474+
Env.set("ANTHROPIC_API_KEY", "test-api-key")
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},
2476+
fn: async () => {
2477+
const providers = await Provider.list()
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// altimate-backend should NOT be available (no credentials file)
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expect(providers["altimate-backend"]).toBeUndefined()
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const model = await Provider.defaultModel()
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// Should fall through to anthropic
2482+
expect(String(model.providerID)).toBe("anthropic")
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},
2484+
})
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})
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// altimate_change end

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