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Refactor LLMProvider to use MODEL_PROVIDER_MAP for model-provider map… #1280

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Refactor LLMProvider to use MODEL_PROVIDER_MAP for model-provider map… #1280

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Refactor LLMProvider to use MODEL_PROVIDER_MAP for model-provider map…
JerryWu1234 Nov 18, 2025
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add changeset
JerryWu1234 Nov 18, 2025
569deb8
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JerryWu1234 Nov 18, 2025
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fix test
JerryWu1234 Nov 18, 2025
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5 changes: 5 additions & 0 deletions .changeset/fuzzy-colts-sleep.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@browserbasehq/stagehand": patch
---

Refactor LLMProvider to use MODEL_PROVIDER_MAP for model-provider mapping
48 changes: 8 additions & 40 deletions packages/core/lib/v3/llm/LLMProvider.ts
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Expand Up @@ -7,7 +7,9 @@ import { LogLine } from "../types/public/logs";
import {
AvailableModel,
ClientOptions,
KnownModel,
ModelProvider,
MODEL_PROVIDER_MAP,
} from "../types/public/model";
import { AISdkClient } from "./aisdk";
import { AnthropicClient } from "./AnthropicClient";
Expand Down Expand Up @@ -58,41 +60,6 @@ const AISDKProvidersWithAPIKey: Record<string, AISDKCustomProvider> = {
perplexity: createPerplexity,
};

const modelToProviderMap: { [key in AvailableModel]: ModelProvider } = {
"gpt-4.1": "openai",
"gpt-4.1-mini": "openai",
"gpt-4.1-nano": "openai",
"o4-mini": "openai",
//prettier-ignore
"o3": "openai",
"o3-mini": "openai",
//prettier-ignore
"o1": "openai",
"o1-mini": "openai",
"gpt-4o": "openai",
"gpt-4o-mini": "openai",
"gpt-4o-2024-08-06": "openai",
"gpt-4.5-preview": "openai",
"o1-preview": "openai",
"claude-3-5-sonnet-latest": "anthropic",
"claude-3-5-sonnet-20240620": "anthropic",
"claude-3-5-sonnet-20241022": "anthropic",
"claude-3-7-sonnet-20250219": "anthropic",
"claude-3-7-sonnet-latest": "anthropic",
"cerebras-llama-3.3-70b": "cerebras",
"cerebras-llama-3.1-8b": "cerebras",
"groq-llama-3.3-70b-versatile": "groq",
"groq-llama-3.3-70b-specdec": "groq",
"moonshotai/kimi-k2-instruct": "groq",
"gemini-1.5-flash": "google",
"gemini-1.5-pro": "google",
"gemini-1.5-flash-8b": "google",
"gemini-2.0-flash-lite": "google",
"gemini-2.0-flash": "google",
"gemini-2.5-flash-preview-04-17": "google",
"gemini-2.5-pro-preview-03-25": "google",
};

export function getAISDKLanguageModel(
subProvider: string,
subModelName: string,
Expand Down Expand Up @@ -156,11 +123,11 @@ export class LLMProvider {
});
}

const provider = modelToProviderMap[modelName];
const provider = MODEL_PROVIDER_MAP[modelName as KnownModel];
if (!provider) {
throw new UnsupportedModelError(Object.keys(modelToProviderMap));
throw new UnsupportedModelError(Object.keys(MODEL_PROVIDER_MAP));
}
const availableModel = modelName as AvailableModel;
const availableModel = modelName as KnownModel;
switch (provider) {
case "openai":
return new OpenAIClient({
Expand Down Expand Up @@ -194,7 +161,7 @@ export class LLMProvider {
});
default:
throw new UnsupportedModelProviderError([
...new Set(Object.values(modelToProviderMap)),
...new Set(Object.values(MODEL_PROVIDER_MAP)),
]);
}
}
Expand All @@ -207,7 +174,8 @@ export class LLMProvider {
return "aisdk";
}
}
const provider = modelToProviderMap[modelName];
const provider =
MODEL_PROVIDER_MAP[modelName as keyof typeof MODEL_PROVIDER_MAP];
return provider;
}
}
74 changes: 38 additions & 36 deletions packages/core/lib/v3/types/public/model.ts
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Expand Up @@ -26,46 +26,48 @@ export type AISDKCustomProvider = (options: {
apiKey: string;
}) => AISDKProvider;

export type AvailableModel =
| "gpt-4.1"
| "gpt-4.1-mini"
| "gpt-4.1-nano"
| "o4-mini"
| "o3"
| "o3-mini"
| "o1"
| "o1-mini"
| "gpt-4o"
| "gpt-4o-mini"
| "gpt-4o-2024-08-06"
| "gpt-4.5-preview"
| "o1-preview"
| "claude-3-5-sonnet-latest"
| "claude-3-5-sonnet-20241022"
| "claude-3-5-sonnet-20240620"
| "claude-3-7-sonnet-latest"
| "claude-3-7-sonnet-20250219"
| "cerebras-llama-3.3-70b"
| "cerebras-llama-3.1-8b"
| "groq-llama-3.3-70b-versatile"
| "groq-llama-3.3-70b-specdec"
| "gemini-1.5-flash"
| "gemini-1.5-pro"
| "gemini-1.5-flash-8b"
| "gemini-2.0-flash-lite"
| "gemini-2.0-flash"
| "gemini-2.5-flash-preview-04-17"
| "gemini-2.5-pro-preview-03-25"
| string;
export const MODEL_PROVIDER_MAP = {
"gpt-4.1": "openai",
"gpt-4.1-mini": "openai",
"gpt-4.1-nano": "openai",
"o4-mini": "openai",
//prettier-ignore
o3: "openai",
"o3-mini": "openai",
//prettier-ignore
o1: "openai",
"o1-mini": "openai",
"gpt-4o": "openai",
"gpt-4o-mini": "openai",
"gpt-4o-2024-08-06": "openai",
"gpt-4.5-preview": "openai",
"o1-preview": "openai",
"claude-3-5-sonnet-latest": "anthropic",
"claude-3-5-sonnet-20241022": "anthropic",
"claude-3-5-sonnet-20240620": "anthropic",
"claude-3-7-sonnet-latest": "anthropic",
"claude-3-7-sonnet-20250219": "anthropic",
"cerebras-llama-3.3-70b": "cerebras",
"cerebras-llama-3.1-8b": "cerebras",
"groq-llama-3.3-70b-versatile": "groq",
"groq-llama-3.3-70b-specdec": "groq",
"moonshotai/kimi-k2-instruct": "groq",
"gemini-1.5-flash": "google",
"gemini-1.5-pro": "google",
"gemini-1.5-flash-8b": "google",
"gemini-2.0-flash-lite": "google",
"gemini-2.0-flash": "google",
"gemini-2.5-flash-preview-04-17": "google",
"gemini-2.5-pro-preview-03-25": "google",
} as const;

export type ModelProvider =
| "openai"
| "anthropic"
| "cerebras"
| "groq"
| "google"
| (typeof MODEL_PROVIDER_MAP)[keyof typeof MODEL_PROVIDER_MAP]
| "aisdk";

export type KnownModel = keyof typeof MODEL_PROVIDER_MAP;
export type AvailableModel = KnownModel | (string & {});

export type ClientOptions = OpenAIClientOptions | AnthropicClientOptions;

export type ModelConfiguration =
Expand Down
1 change: 1 addition & 0 deletions packages/core/tests/public-types.test.ts
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Expand Up @@ -24,6 +24,7 @@ const publicApiShape = {
LLMResponseError: Stagehand.LLMResponseError,
LOG_LEVEL_NAMES: Stagehand.LOG_LEVEL_NAMES,
MCPConnectionError: Stagehand.MCPConnectionError,
MODEL_PROVIDER_MAP: Stagehand.MODEL_PROVIDER_MAP,
MissingEnvironmentVariableError: Stagehand.MissingEnvironmentVariableError,
MissingLLMConfigurationError: Stagehand.MissingLLMConfigurationError,
PageNotFoundError: Stagehand.PageNotFoundError,
Expand Down