Mintplex-Labs/anything-llm · error · Error

xAI chat: is not valid for chat completion!

Error message

xAI chat: ${this.model} is not valid for chat completion!

What it means

Sentinel guard in getChatCompletion: this.model failed isValidChatCompletionModel, meaning the configured xAI model identifier is not in the list of models known to support chat completions (e.g. an embedding-only or misspelled model name was selected).

Solutions

1. Select an xAI model valid for chat completion.

When it happens

Trigger: Thrown when the configured xAI model is not a chat model.

Common situations: Model preference set to an invalid model.

AI-assisted analysis of Mintplex-Labs/anything-llm@3aec848f28 (2026-08-18). Data as JSON: /api/errors/7855e8773127e57b. Report an issue: GitHub.

Appendix: source

Thrown at server/utils/AiProviders/xai/index.js:120

    attachments = [], // This is the specific attachment for only this prompt
  }) {
    const prompt = {
      role: "system",
      content: `${systemPrompt}${this.#appendContext(contextTexts)}`,
    };
    return [
      prompt,
      ...formatChatHistory(chatHistory, this.#generateContent),
      {
        role: "user",
        content: this.#generateContent({ userPrompt, attachments }),
      },
    ];
  }

  async getChatCompletion(messages = null, { temperature = 0.7 }) {
    if (!this.isValidChatCompletionModel(this.model))
      throw new Error(
        `xAI chat: ${this.model} is not valid for chat completion!`
      );

    const result = await LLMPerformanceMonitor.measureAsyncFunction(
      this.openai.chat.completions
        .create({
          model: this.model,
          messages,
          temperature,
        })
        .catch((e) => {
          throw new Error(e.message);
        })
    );

    if (
      !result.output.hasOwnProperty("choices") ||
      result.output.choices.length === 0

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