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opencode/packages/opencode/src/provider/provider.ts

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import z from "zod"
import fuzzysort from "fuzzysort"
import { Config } from "../config/config"
import { mergeDeep, sortBy } from "remeda"
import { NoSuchModelError, type LanguageModel, type Provider as SDK } from "ai"
import { Log } from "../util/log"
import { BunProc } from "../bun"
import { Plugin } from "../plugin"
import { ModelsDev } from "./models"
import { NamedError } from "@opencode-ai/util/error"
import { Auth } from "../auth"
import { Instance } from "../project/instance"
import { Flag } from "../flag/flag"
import { iife } from "@/util/iife"
// Direct imports for bundled providers
import { createAmazonBedrock } from "@ai-sdk/amazon-bedrock"
import { createAnthropic } from "@ai-sdk/anthropic"
import { createAzure } from "@ai-sdk/azure"
import { createGoogleGenerativeAI } from "@ai-sdk/google"
import { createVertex } from "@ai-sdk/google-vertex"
import { createVertexAnthropic } from "@ai-sdk/google-vertex/anthropic"
import { createOpenAI } from "@ai-sdk/openai"
import { createOpenAICompatible } from "@ai-sdk/openai-compatible"
import { createOpenRouter } from "@openrouter/ai-sdk-provider"
export namespace Provider {
const log = Log.create({ service: "provider" })
const BUNDLED_PROVIDERS: Record<string, (options: any) => SDK> = {
"@ai-sdk/amazon-bedrock": createAmazonBedrock,
"@ai-sdk/anthropic": createAnthropic,
"@ai-sdk/azure": createAzure,
"@ai-sdk/google": createGoogleGenerativeAI,
"@ai-sdk/google-vertex": createVertex,
"@ai-sdk/google-vertex/anthropic": createVertexAnthropic,
"@ai-sdk/openai": createOpenAI,
"@ai-sdk/openai-compatible": createOpenAICompatible,
"@openrouter/ai-sdk-provider": createOpenRouter,
}
type CustomLoader = (provider: ModelsDev.Provider) => Promise<{
autoload: boolean
getModel?: (sdk: any, modelID: string, options?: Record<string, any>) => Promise<any>
options?: Record<string, any>
}>
type Source = "env" | "config" | "custom" | "api"
const CUSTOM_LOADERS: Record<string, CustomLoader> = {
async anthropic() {
return {
autoload: false,
options: {
headers: {
"anthropic-beta":
"claude-code-20250219,interleaved-thinking-2025-05-14,fine-grained-tool-streaming-2025-05-14",
},
},
}
},
async opencode(input) {
const hasKey = await (async () => {
if (input.env.some((item) => process.env[item])) return true
if (await Auth.get(input.id)) return true
return false
})()
if (!hasKey) {
for (const [key, value] of Object.entries(input.models)) {
if (value.cost.input === 0) continue
delete input.models[key]
}
}
return {
autoload: Object.keys(input.models).length > 0,
options: hasKey ? {} : { apiKey: "public" },
}
},
openai: async () => {
return {
autoload: false,
async getModel(sdk: any, modelID: string, _options?: Record<string, any>) {
return sdk.responses(modelID)
},
options: {},
}
},
azure: async () => {
return {
autoload: false,
async getModel(sdk: any, modelID: string, options?: Record<string, any>) {
if (options?.["useCompletionUrls"]) {
return sdk.chat(modelID)
} else {
return sdk.responses(modelID)
}
},
options: {},
}
},
"azure-cognitive-services": async () => {
const resourceName = process.env["AZURE_COGNITIVE_SERVICES_RESOURCE_NAME"]
return {
autoload: false,
async getModel(sdk: any, modelID: string, options?: Record<string, any>) {
if (options?.["useCompletionUrls"]) {
return sdk.chat(modelID)
} else {
return sdk.responses(modelID)
}
},
options: {
baseURL: resourceName ? `https://${resourceName}.cognitiveservices.azure.com/openai` : undefined,
},
}
},
"amazon-bedrock": async () => {
if (!process.env["AWS_PROFILE"] && !process.env["AWS_ACCESS_KEY_ID"] && !process.env["AWS_BEARER_TOKEN_BEDROCK"])
return { autoload: false }
const region = process.env["AWS_REGION"] ?? "us-east-1"
const { fromNodeProviderChain } = await import(await BunProc.install("@aws-sdk/credential-providers"))
return {
autoload: true,
options: {
region,
credentialProvider: fromNodeProviderChain(),
},
async getModel(sdk: any, modelID: string, _options?: Record<string, any>) {
// Skip region prefixing if model already has global prefix
if (modelID.startsWith("global.")) {
return sdk.languageModel(modelID)
}
let regionPrefix = region.split("-")[0]
switch (regionPrefix) {
case "us": {
const modelRequiresPrefix = [
"nova-micro",
"nova-lite",
"nova-pro",
"nova-premier",
"claude",
"deepseek",
].some((m) => modelID.includes(m))
const isGovCloud = region.startsWith("us-gov")
if (modelRequiresPrefix && !isGovCloud) {
modelID = `${regionPrefix}.${modelID}`
}
break
}
case "eu": {
const regionRequiresPrefix = [
"eu-west-1",
"eu-west-2",
"eu-west-3",
"eu-north-1",
"eu-central-1",
"eu-south-1",
"eu-south-2",
].some((r) => region.includes(r))
const modelRequiresPrefix = ["claude", "nova-lite", "nova-micro", "llama3", "pixtral"].some((m) =>
modelID.includes(m),
)
if (regionRequiresPrefix && modelRequiresPrefix) {
modelID = `${regionPrefix}.${modelID}`
}
break
}
case "ap": {
const isAustraliaRegion = ["ap-southeast-2", "ap-southeast-4"].includes(region)
if (
isAustraliaRegion &&
["anthropic.claude-sonnet-4-5", "anthropic.claude-haiku"].some((m) => modelID.includes(m))
) {
regionPrefix = "au"
modelID = `${regionPrefix}.${modelID}`
} else {
const modelRequiresPrefix = ["claude", "nova-lite", "nova-micro", "nova-pro"].some((m) =>
modelID.includes(m),
)
if (modelRequiresPrefix) {
regionPrefix = "apac"
modelID = `${regionPrefix}.${modelID}`
}
}
break
}
}
return sdk.languageModel(modelID)
},
}
},
openrouter: async () => {
return {
autoload: false,
options: {
headers: {
"HTTP-Referer": "https://opencode.ai/",
"X-Title": "opencode",
},
},
}
},
vercel: async () => {
return {
autoload: false,
options: {
headers: {
"http-referer": "https://opencode.ai/",
"x-title": "opencode",
},
},
}
},
"google-vertex": async () => {
const project = process.env["GOOGLE_CLOUD_PROJECT"] ?? process.env["GCP_PROJECT"] ?? process.env["GCLOUD_PROJECT"]
const location = process.env["GOOGLE_CLOUD_LOCATION"] ?? process.env["VERTEX_LOCATION"] ?? "us-east5"
const autoload = Boolean(project)
if (!autoload) return { autoload: false }
return {
autoload: true,
options: {
project,
location,
},
async getModel(sdk: any, modelID: string) {
const id = String(modelID).trim()
return sdk.languageModel(id)
},
}
},
"google-vertex-anthropic": async () => {
const project = process.env["GOOGLE_CLOUD_PROJECT"] ?? process.env["GCP_PROJECT"] ?? process.env["GCLOUD_PROJECT"]
const location = process.env["GOOGLE_CLOUD_LOCATION"] ?? process.env["VERTEX_LOCATION"] ?? "global"
const autoload = Boolean(project)
if (!autoload) return { autoload: false }
return {
autoload: true,
options: {
project,
location,
},
async getModel(sdk: any, modelID: string) {
const id = String(modelID).trim()
return sdk.languageModel(id)
},
}
},
zenmux: async () => {
return {
autoload: false,
options: {
headers: {
"HTTP-Referer": "https://opencode.ai/",
"X-Title": "opencode",
},
},
}
},
}
const state = Instance.state(async () => {
using _ = log.time("state")
const config = await Config.get()
const database = await ModelsDev.get()
const disabled = new Set(config.disabled_providers ?? [])
const enabled = config.enabled_providers ? new Set(config.enabled_providers) : null
function isProviderAllowed(providerID: string): boolean {
if (enabled && !enabled.has(providerID)) return false
if (disabled.has(providerID)) return false
return true
}
const providers: {
[providerID: string]: {
source: Source
info: ModelsDev.Provider
getModel?: (sdk: any, modelID: string, options?: Record<string, any>) => Promise<any>
options: Record<string, any>
}
} = {}
const models = new Map<
string,
{
providerID: string
modelID: string
info: ModelsDev.Model
language: LanguageModel
npm?: string
}
>()
const sdk = new Map<number, SDK>()
// Maps `${provider}/${key}` to the providers actual model ID for custom aliases.
const realIdByKey = new Map<string, string>()
log.info("init")
function mergeProvider(
id: string,
options: Record<string, any>,
source: Source,
getModel?: (sdk: any, modelID: string, options?: Record<string, any>) => Promise<any>,
) {
const provider = providers[id]
if (!provider) {
const info = database[id]
if (!info) return
if (info.api && !options["baseURL"]) options["baseURL"] = info.api
providers[id] = {
source,
info,
options,
getModel,
}
return
}
provider.options = mergeDeep(provider.options, options)
provider.source = source
provider.getModel = getModel ?? provider.getModel
}
const configProviders = Object.entries(config.provider ?? {})
// Add GitHub Copilot Enterprise provider that inherits from GitHub Copilot
if (database["github-copilot"]) {
const githubCopilot = database["github-copilot"]
database["github-copilot-enterprise"] = {
...githubCopilot,
id: "github-copilot-enterprise",
name: "GitHub Copilot Enterprise",
// Enterprise uses a different API endpoint - will be set dynamically based on auth
api: undefined,
}
}
for (const [providerID, provider] of configProviders) {
const existing = database[providerID]
const parsed: ModelsDev.Provider = {
id: providerID,
npm: provider.npm ?? existing?.npm,
name: provider.name ?? existing?.name ?? providerID,
env: provider.env ?? existing?.env ?? [],
api: provider.api ?? existing?.api,
models: existing?.models ?? {},
}
for (const [modelID, model] of Object.entries(provider.models ?? {})) {
const existing = parsed.models[model.id ?? modelID]
const name = iife(() => {
if (model.name) return model.name
if (model.id && model.id !== modelID) return modelID
return existing?.name ?? modelID
})
const parsedModel: ModelsDev.Model = {
id: modelID,
name,
release_date: model.release_date ?? existing?.release_date,
attachment: model.attachment ?? existing?.attachment ?? false,
reasoning: model.reasoning ?? existing?.reasoning ?? false,
temperature: model.temperature ?? existing?.temperature ?? false,
tool_call: model.tool_call ?? existing?.tool_call ?? true,
cost:
!model.cost && !existing?.cost
? {
input: 0,
output: 0,
cache_read: 0,
cache_write: 0,
}
: {
cache_read: 0,
cache_write: 0,
...existing?.cost,
...model.cost,
},
options: {
...existing?.options,
...model.options,
},
limit: model.limit ??
existing?.limit ?? {
context: 0,
output: 0,
},
modalities: model.modalities ??
existing?.modalities ?? {
input: ["text"],
output: ["text"],
},
headers: model.headers,
provider: model.provider ?? existing?.provider,
}
if (model.id && model.id !== modelID) {
realIdByKey.set(`${providerID}/${modelID}`, model.id)
}
parsed.models[modelID] = parsedModel
}
database[providerID] = parsed
}
// load env
for (const [providerID, provider] of Object.entries(database)) {
if (disabled.has(providerID)) continue
const apiKey = provider.env.map((item) => process.env[item]).at(0)
if (!apiKey) continue
mergeProvider(
providerID,
// only include apiKey if there's only one potential option
provider.env.length === 1 ? { apiKey } : {},
"env",
)
}
// load apikeys
for (const [providerID, provider] of Object.entries(await Auth.all())) {
if (disabled.has(providerID)) continue
if (provider.type === "api") {
mergeProvider(providerID, { apiKey: provider.key }, "api")
}
}
// load custom
for (const [providerID, fn] of Object.entries(CUSTOM_LOADERS)) {
if (disabled.has(providerID)) continue
const result = await fn(database[providerID])
if (result && (result.autoload || providers[providerID])) {
mergeProvider(providerID, result.options ?? {}, "custom", result.getModel)
}
}
for (const plugin of await Plugin.list()) {
if (!plugin.auth) continue
const providerID = plugin.auth.provider
if (disabled.has(providerID)) continue
// For github-copilot plugin, check if auth exists for either github-copilot or github-copilot-enterprise
let hasAuth = false
const auth = await Auth.get(providerID)
if (auth) hasAuth = true
// Special handling for github-copilot: also check for enterprise auth
if (providerID === "github-copilot" && !hasAuth) {
const enterpriseAuth = await Auth.get("github-copilot-enterprise")
if (enterpriseAuth) hasAuth = true
}
if (!hasAuth) continue
if (!plugin.auth.loader) continue
// Load for the main provider if auth exists
if (auth) {
const options = await plugin.auth.loader(() => Auth.get(providerID) as any, database[plugin.auth.provider])
mergeProvider(plugin.auth.provider, options ?? {}, "custom")
}
// If this is github-copilot plugin, also register for github-copilot-enterprise if auth exists
if (providerID === "github-copilot") {
const enterpriseProviderID = "github-copilot-enterprise"
if (!disabled.has(enterpriseProviderID)) {
const enterpriseAuth = await Auth.get(enterpriseProviderID)
if (enterpriseAuth) {
const enterpriseOptions = await plugin.auth.loader(
() => Auth.get(enterpriseProviderID) as any,
database[enterpriseProviderID],
)
mergeProvider(enterpriseProviderID, enterpriseOptions ?? {}, "custom")
}
}
}
}
// load config
for (const [providerID, provider] of configProviders) {
mergeProvider(providerID, provider.options ?? {}, "config")
}
for (const [providerID, provider] of Object.entries(providers)) {
if (!isProviderAllowed(providerID)) {
delete providers[providerID]
continue
}
const configProvider = config.provider?.[providerID]
const filteredModels = Object.fromEntries(
Object.entries(provider.info.models)
// Filter out blacklisted models
.filter(
([modelID]) =>
modelID !== "gpt-5-chat-latest" && !(providerID === "openrouter" && modelID === "openai/gpt-5-chat"),
)
// Filter out experimental models
.filter(
([, model]) =>
((!model.experimental && model.status !== "alpha") || Flag.OPENCODE_ENABLE_EXPERIMENTAL_MODELS) &&
model.status !== "deprecated",
)
// Filter by provider's whitelist/blacklist from config
.filter(([modelID]) => {
if (!configProvider) return true
return (
(!configProvider.blacklist || !configProvider.blacklist.includes(modelID)) &&
(!configProvider.whitelist || configProvider.whitelist.includes(modelID))
)
}),
)
provider.info.models = filteredModels
if (Object.keys(provider.info.models).length === 0) {
delete providers[providerID]
continue
}
log.info("found", { providerID, npm: provider.info.npm })
}
return {
models,
providers,
sdk,
realIdByKey,
}
})
export async function list() {
return state().then((state) => state.providers)
}
async function getSDK(provider: ModelsDev.Provider, model: ModelsDev.Model) {
return (async () => {
using _ = log.time("getSDK", {
providerID: provider.id,
})
const s = await state()
const pkg = model.provider?.npm ?? provider.npm ?? provider.id
const options = { ...s.providers[provider.id]?.options }
if (pkg.includes("@ai-sdk/openai-compatible") && options["includeUsage"] === undefined) {
options["includeUsage"] = true
}
const key = Bun.hash.xxHash32(JSON.stringify({ pkg, options }))
const existing = s.sdk.get(key)
if (existing) return existing
const customFetch = options["fetch"]
options["fetch"] = async (input: any, init?: BunFetchRequestInit) => {
// Preserve custom fetch if it exists, wrap it with timeout logic
const fetchFn = customFetch ?? fetch
const opts = init ?? {}
if (options["timeout"] !== undefined && options["timeout"] !== null) {
const signals: AbortSignal[] = []
if (opts.signal) signals.push(opts.signal)
if (options["timeout"] !== false) signals.push(AbortSignal.timeout(options["timeout"]))
const combined = signals.length > 1 ? AbortSignal.any(signals) : signals[0]
opts.signal = combined
}
return fetchFn(input, {
...opts,
// @ts-ignore see here: https://github.com/oven-sh/bun/issues/16682
timeout: false,
})
}
// Special case: google-vertex-anthropic uses a subpath import
const bundledKey = provider.id === "google-vertex-anthropic" ? "@ai-sdk/google-vertex/anthropic" : pkg
const bundledFn = BUNDLED_PROVIDERS[bundledKey]
if (bundledFn) {
log.info("using bundled provider", { providerID: provider.id, pkg: bundledKey })
const loaded = bundledFn({
name: provider.id,
...options,
})
s.sdk.set(key, loaded)
return loaded as SDK
}
let installedPath: string
if (!pkg.startsWith("file://")) {
installedPath = await BunProc.install(pkg, "latest")
} else {
log.info("loading local provider", { pkg })
installedPath = pkg
}
const mod = await import(installedPath)
const fn = mod[Object.keys(mod).find((key) => key.startsWith("create"))!]
const loaded = fn({
name: provider.id,
...options,
})
s.sdk.set(key, loaded)
return loaded as SDK
})().catch((e) => {
throw new InitError({ providerID: provider.id }, { cause: e })
})
}
export async function getProvider(providerID: string) {
return state().then((s) => s.providers[providerID])
}
export async function getModel(providerID: string, modelID: string) {
const key = `${providerID}/${modelID}`
const s = await state()
if (s.models.has(key)) return s.models.get(key)!
log.info("getModel", {
providerID,
modelID,
})
const provider = s.providers[providerID]
if (!provider) {
const availableProviders = Object.keys(s.providers)
const matches = fuzzysort.go(providerID, availableProviders, { limit: 3, threshold: -10000 })
const suggestions = matches.map((m) => m.target)
throw new ModelNotFoundError({ providerID, modelID, suggestions })
}
const info = provider.info.models[modelID]
if (!info) {
const availableModels = Object.keys(provider.info.models)
const matches = fuzzysort.go(modelID, availableModels, { limit: 3, threshold: -10000 })
const suggestions = matches.map((m) => m.target)
throw new ModelNotFoundError({ providerID, modelID, suggestions })
}
const sdk = await getSDK(provider.info, info)
try {
const keyReal = `${providerID}/${modelID}`
const realID = s.realIdByKey.get(keyReal) ?? info.id
const language = provider.getModel
? await provider.getModel(sdk, realID, provider.options)
: sdk.languageModel(realID)
log.info("found", { providerID, modelID })
s.models.set(key, {
providerID,
modelID,
info,
language,
npm: info.provider?.npm ?? provider.info.npm,
})
return {
modelID,
providerID,
info,
language,
npm: info.provider?.npm ?? provider.info.npm,
}
} catch (e) {
if (e instanceof NoSuchModelError)
throw new ModelNotFoundError(
{
modelID: modelID,
providerID,
},
{ cause: e },
)
throw e
}
}
export async function closest(providerID: string, query: string[]) {
const s = await state()
const provider = s.providers[providerID]
if (!provider) return undefined
for (const item of query) {
for (const modelID of Object.keys(provider.info.models)) {
if (modelID.includes(item))
return {
providerID,
modelID,
}
}
}
}
export async function getSmallModel(providerID: string) {
const cfg = await Config.get()
if (cfg.small_model) {
const parsed = parseModel(cfg.small_model)
return getModel(parsed.providerID, parsed.modelID)
}
const provider = await state().then((state) => state.providers[providerID])
if (provider) {
let priority = [
"claude-haiku-4-5",
"claude-haiku-4.5",
"3-5-haiku",
"3.5-haiku",
"gemini-2.5-flash",
"gpt-5-nano",
]
// claude-haiku-4.5 is considered a premium model in github copilot, we shouldn't use premium requests for title gen
if (providerID === "github-copilot") {
priority = priority.filter((m) => m !== "claude-haiku-4.5")
}
if (providerID.startsWith("opencode")) {
priority = ["gpt-5-nano"]
}
for (const item of priority) {
for (const model of Object.keys(provider.info.models)) {
if (model.includes(item)) return getModel(providerID, model)
}
}
}
// Check if opencode provider is available before using it
const opencodeProvider = await state().then((state) => state.providers["opencode"])
if (opencodeProvider && opencodeProvider.info.models["gpt-5-nano"]) {
return getModel("opencode", "gpt-5-nano")
}
return undefined
}
const priority = ["gpt-5", "claude-sonnet-4", "big-pickle", "gemini-3-pro"]
export function sort(models: ModelsDev.Model[]) {
return sortBy(
models,
[(model) => priority.findIndex((filter) => model.id.includes(filter)), "desc"],
[(model) => (model.id.includes("latest") ? 0 : 1), "asc"],
[(model) => model.id, "desc"],
)
}
export async function defaultModel() {
const cfg = await Config.get()
if (cfg.model) return parseModel(cfg.model)
const provider = await list()
.then((val) => Object.values(val))
.then((x) => x.find((p) => !cfg.provider || Object.keys(cfg.provider).includes(p.info.id)))
if (!provider) throw new Error("no providers found")
const [model] = sort(Object.values(provider.info.models))
if (!model) throw new Error("no models found")
return {
providerID: provider.info.id,
modelID: model.id,
}
}
export function parseModel(model: string) {
const [providerID, ...rest] = model.split("/")
return {
providerID: providerID,
modelID: rest.join("/"),
}
}
export const ModelNotFoundError = NamedError.create(
"ProviderModelNotFoundError",
z.object({
providerID: z.string(),
modelID: z.string(),
suggestions: z.array(z.string()).optional(),
}),
)
export const InitError = NamedError.create(
"ProviderInitError",
z.object({
providerID: z.string(),
}),
)
}