Mintplex-Labs/anything-llm · error · Error

No Perplexity API key was set.

Error message

No Perplexity API key was set.

What it means

Configuration guard thrown by the PerplexityLLM constructor: the perplexity provider was selected but the PERPLEXITY_API_KEY environment variable is empty/unset, so the online-models/search API cannot be authenticated.

Solutions

1. Set the Perplexity API key in provider settings or env.

When it happens

Trigger: Thrown at provider construction when no Perplexity API key is configured.

Common situations: Perplexity selected as LLM provider without an API key.

AI-assisted analysis of Mintplex-Labs/anything-llm@20f6d3546c (2026-08-18). Data as JSON: /api/errors/ace19a1ad2b7e728. Report an issue: GitHub.

Appendix: source

Thrown at server/utils/AiProviders/perplexity/index.js:21

const { isAbortError } = require("../../helpers/abortSignals");
const {
  writeResponseChunk,
  clientAbortedHandler,
} = require("../../helpers/chat/responses");
const {
  LLMPerformanceMonitor,
} = require("../../helpers/chat/LLMPerformanceMonitor");
const { getAnythingLLMUserAgent } = require("../../../endpoints/utils");

function perplexityModels() {
  const { MODELS } = require("./models.js");
  return MODELS || {};
}

class PerplexityLLM {
  constructor(embedder = null, modelPreference = null) {
    if (!process.env.PERPLEXITY_API_KEY)
      throw new Error("No Perplexity API key was set.");

    this.className = "PerplexityLLM";
    const { OpenAI: OpenAIApi } = require("openai");
    this.openai = new OpenAIApi({
      baseURL: "https://api.perplexity.ai",
      apiKey: process.env.PERPLEXITY_API_KEY ?? null,
      defaultHeaders: {
        "X-Pplx-Integration": getAnythingLLMUserAgent(),
      },
    });
    this.model =
      modelPreference ||
      process.env.PERPLEXITY_MODEL_PREF ||
      "llama-3-sonar-large-32k-online"; // Give at least a unique model to the provider as last fallback.
    this.limits = {
      history: this.promptWindowLimit() * 0.15,
      system: this.promptWindowLimit() * 0.15,
      user: this.promptWindowLimit() * 0.7,

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