Tool
Perplexity
Free tier: Check pricing (opens in a new tab)
From: Check pricing (opens in a new tab)
Checked October 16, 2026
- Strength. The docs describe a web-research product, with API pricing written up on the official docs site.
- Weakness. The API pricing page we could read did not state a free-tier amount or a monthly starting price.
Checked October 15, 2026
Web research product. Homepage returned HTTP 403 to our checker, so this listing is not fully checked.
Perplexity answers questions from the web. The homepage returned HTTP 403 to our client. Docs were reachable, but we could not cleanly confirm a consumer Free versus Pro split. This listing is untested. A 403 here is an environment limit, not proof a browser cannot open the site.
Best for
- Web research, once you confirm the current plan in a browser
Not ideal for
- Anyone treating this card as a finished verification
- A self-hosted crawler or vector database
What we checked
Not fully checked. The homepage returned HTTP 403 to our client on October 15, 2026. That is an environment limit, not proof the site is down in a browser, and it is not a smoke test.
No local install attempted (SaaS/desktop/extension or install not feasible without account). Homepage HTTP 403 to automated client.
Notes from this check
- perplexity.ai homepage HTTP 403 from this environment.
Related tools
LlamaIndex
Open-source framework for retrieval and agents. The cloud free plan includes 10,000 credits.
Smoke-testedOpen sourceAgentChecked October 15, 2026
Free tier: Yes · 10,000 credits.
From: $50/mo
Checked October 16, 2026
- Strength. We imported llama-index-core 0.14.25, and the cloud free plan includes 10,000 credits.
- Weakness. Cloud Starter is $50 per month after the 10,000 free credits.
Mem0
Memory layer for agents. We imported the Python package locally; no account and no model call.
Smoke-testedOpen sourceChecked October 15, 2026
Free tier: Yes · 10,000 add requests and 1,000 retrieval requests per month.
From: $19/mo
Checked October 16, 2026
- Strength. We imported mem0ai 2.2.1 locally, and the cloud plan includes 10,000 add requests and 1,000 retrieval requests per month.
- Weakness. The paid plan starts at $19 per month once you pass those monthly request limits.
Firecrawl
Turns websites into markdown for LLMs. Open-source repo plus a cloud API with a free plan.
Docs checkedOpen sourceChecked October 15, 2026
Free tier: Yes · 1,000 credits per month.
From: Check pricing (opens in a new tab)
Checked October 16, 2026
- Strength. The free cloud plan includes 1,000 credits per month to turn pages into markdown, and the repo is open source.
- Weakness. Paid cloud samples on the page included about $16 and $75, and a monthly starting price was not confirmed.
Pinecone
Managed vector database. Starter is free, and Builder is $20 per month.
Docs checkedChecked October 15, 2026
Free tier: Yes
From: $20/mo
Trial: 3 weeks
Checked October 16, 2026
- Strength. Starter is free for hosted vector search, and Builder is $20 per month with a 3-week trial.
- Weakness. Builder is $20 per month after the trial, and the free Starter limits were not spelled out on the page we parsed.