Method createModel

src/node/services/providerModelFactory.ts:966–999

* Create an AI SDK model from a model string (e.g., "anthropic:claude-opus-4-1") * * IMPORTANT: We ONLY use providers.jsonc as the single source of truth for provider configuration. * We DO NOT use environment variables or default constructors that might read them. * This ensures consist

(
    modelString: string,
    muxProviderOptions?: MuxProviderOptions,
    opts?: {
      agentInitiated?: boolean;
      workspaceId?: string;
      routeContext?: RouteContext;
    }
  )

   * supported by the provider will work without modification.
   */
  async createModel(
    modelString: string,
    muxProviderOptions?: MuxProviderOptions,
    opts?: {
      agentInitiated?: boolean;
      workspaceId?: string;
      routeContext?: RouteContext;
    }
  ): Promise<Result<LanguageModel, SendMessageError>> {
    const result = await this._createModelCore(modelString, muxProviderOptions, opts);
    if (!result.success) {
      return result;
    }

    // DevTools middleware wrappers currently support LanguageModelV3 instances only.
    if (typeof result.data === "string" || result.data.specificationVersion !== "v3") {
      return result;
    }

    let model: LanguageModel = result.data;

    const workspaceId = opts?.workspaceId;
    const devToolsService = this.devToolsService;
    if (workspaceId != null && devToolsService?.enabled) {
      const innerModel = model;
      model = wrapLanguageModel({
        model,
        middleware: createDevToolsMiddleware(workspaceId, devToolsService),
      });
      moveLanguageModelCleanup(innerModel, model);
    }

    return Ok(model);
  }

  private async _createModelCore(
    modelString: string,