Is Functionary free to use?

Yes. Functionary has a free plan — Open-source model; self-hosted or via MeetKai endpoints

Does Functionary have memory?

No persistent memory — sessions don't carry over by default.

What are the best alternatives to Functionary?

Browse the AI Tools Directory for related tools.

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Functionary Review

functionary.meetkai.com →

Open-source language model by MeetKai that decides when and how to call functions/tools, compatible with OpenAI's function-calling API format.

General-Purpose Assistants

Verdict

Functionary stands out in the function-calling model space by supporting parallel and serial tool execution, multi-turn grounding in tool outputs, and normal chat fallback — all with 100% accuracy in function/argument name generation via grammar sampling. It competes directly with Gorilla, NexusRaven, and GPT-4 function calling, benchmarking favorably on MeetKai's internal dataset. The main tradeoff is that it requires technical setup and infrastructure, limiting accessibility for non-engineering users.

What it does

MeetKai

Best for

Developers and power users looking for a customizable language model for executing functions and plugins.

At a glance

Free planYes

Login requiredNo

MemoryNo

VoiceNo

Image generationNo

Group chatNo

Mobile appNo

NSFW policyN/A

PricingFree (open source) — Open-source model; self-hosted or via MeetKai endpoints

Pros & cons

Pros

100% accuracy in function/argument name generation
Supports parallel, serial, and nested function calls
OpenAI-compatible API server via vLLM

Cons

Requires significant technical setup to deploy
No managed hosted tier clearly advertised
Benchmark is MeetKai's own in-house dataset

Related tools

Frequently asked

Is Functionary free to use?: Yes. Functionary has a free plan — Open-source model; self-hosted or via MeetKai endpoints
Does Functionary have memory?: No persistent memory — sessions don't carry over by default.
Can Functionary do voice or images?: Voice: no. Image generation: no.
What are the best alternatives to Functionary?: Browse the AI Tools Directory for related tools.

Looking for an alternative?

MeMakie is an AI character chat platform with persistent memory, group chat, and a community feed of user-built characters. Free to start.

Try MeMakie → Browse more tools

Notes from users

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