BlenderBot 2.0

Facebook AI's 2021 research chatbot with memory and web search. Now archived.

ArchivedResearch chatbotOpen source
See alternatives ↗Last verified: 5 Nov 2026

Jul 2021Released
400M, 2.7BModel sizes
MITParlAI license
ArchivedSince 30 Jul 2026
The short version

What happened to BlenderBot 2.0?

BlenderBot 2.0 was a research chatbot that Facebook AI, now Meta, released as open source on 16 July 2021. It was never a consumer app, and the ParlAI project that holds it was archived on 30 July 2026, so it is no longer maintained.

Its big step was memory and search. It saved what it learned in a conversation to a long-term memory, kept separately for each person, and it wrote its own internet search queries to find current facts. Meta said hallucinations dropped from 9.1% to 3.0% compared with BlenderBot 1. It came in two sizes, 400M and 2.7B parameters. BlenderBot 3, a 175B-parameter model, followed in the same project, and in September 2023 Meta launched Meta AI as its consumer assistant.

Bottom line: If you want a chatbot to use, pick a current assistant such as ChatGPT or Meta AI. If you are studying chatbot research, the BlenderBot 2.0 code is still readable on GitHub, but it will not get fixes.

What it did

Key features

Long-term memory

It stored useful facts from a conversation in a long-term memory, kept separate for each person it talked with.

Internet search

During a chat it generated its own search queries and worked the results into its replies.

Fully open release

Meta released the model, code and evaluation setup through ParlAI, in 400M and 2.7B sizes.

New training datasets

It came with two new datasets, Wizard of the Internet and Multi-Session Chat, plus safety training on the BAD dataset.

What it cost

BlenderBot 2.0 pricing

Option Price Status today
BlenderBot 2.0 (ParlAI) Free Open source. The ParlAI repository is read-only since 30 July 2026.
BlenderBot 3 Free Part of the same archived ParlAI project. The 175B model was shared by request.
ChatGPT Free, paid from $8/mo Live. A current general AI assistant from OpenAI.

BlenderBot was a free research release, never a paid product. ChatGPT Go is $8 a month in the US.

Honest fit

What still works, and what doesn't

Still works

  • Reading the ParlAI code and docs on GitHub
  • The research papers and datasets behind it
  • Current assistants such as ChatGPT and Meta AI

No longer available

  • Maintenance or fixes for BlenderBot 2.0
  • Updates to the ParlAI framework, now read-only
  • A hosted BlenderBot 2.0 chatbot you can sign up for
What people ask

BlenderBot 2.0 FAQ

Is BlenderBot 2.0 still available?

Only as archived code. The ParlAI repository that holds it was archived on 30 July 2026 and is read-only. It gets no updates.

What could BlenderBot 2.0 do?

Remember and search. It kept a long-term memory of each conversation partner and searched the internet during a chat to give current answers.

Who made BlenderBot 2.0?

Facebook AI Research, now Meta. It was released on 16 July 2021 through ParlAI, Meta's open source dialogue research platform.

Is there a BlenderBot 3?

Yes. BlenderBot 3 is a 175B-parameter chatbot in the same ParlAI project. Smaller 3B and 30B versions were in the model zoo.

What is Meta's chatbot now?

Meta AI. Meta launched it in September 2023 as an assistant in WhatsApp, Messenger and Instagram, built on Llama 2 technology at launch.

What should I use instead of BlenderBot 2.0?

A current AI assistant. ChatGPT is the best known. See our BlenderBot 2.0 alternatives for more.
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