Last updated 08-14-2026
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Wit AI
Wit AI turns spoken or typed user messages into structured intents, entities, and traits your app can act on. Owned by Meta, it powers bots, mobile apps, smart home devices, and wearables where people expect natural language instead of rigid menus.
Unlike general chatbots that generate open-ended replies, Wit focuses on understanding what someone meant and returning machine-readable fields. Ask "What's the weather tomorrow in Palo Alto?" and Wit returns an intent like weather_forecast plus parsed datetime and location values your code can route to an API.
Developers building customer support bots, voice assistants, and IoT controls get a free platform with 132 languages, community-trained models, and HTTP APIs you can query from day one. Sign in with a Meta account, train on a handful of example utterances, and wire the responses into Messenger, mobile, or hardware without running your own speech stack.
Free for commercial use with no paid tier listed on the FAQ
Supports 132 text languages and 30 speech recognition languages
350,000+ developers share open-app training data across the community
Train intents from a few example utterances instead of hand-written rules
HTTP API returns intents, entities, and traits with confidence scores
Works across bots, mobile apps, smart home gear, and wearable devices
Completely free for commercial bots and apps with no usage-based pricing tier.
132-language text support covers far more locales than most standalone NLP APIs.
Training from a handful of utterances beats maintaining brittle keyword rules.
Open apps let teams borrow community intents and entities to speed up development.
Meta login and Messenger bot recipes lower the barrier for conversational support flows.
Requires a Meta account, and deleting that account locks you out of Wit apps.
Speech synthesis is English-only despite broad speech recognition coverage.
Rate limits apply per HTTP endpoint, which can throttle high-volume production bots.
Is Wit AI free?
Yes. Wit AI is free for both private and public apps, including commercial use. Pricing is governed by Meta's Wit.ai terms of service with no paid plans listed on the site.
How many languages does Wit AI support?
Wit AI supports 132 text languages for natural language understanding. Speech recognition covers 30 languages including English, Spanish, French, German, Chinese, Japanese, and Hindi.
How do you sign up for Wit AI?
Create a Wit AI account by signing in with your Meta account on wit.ai. After login, click New App, name your project, pick a language, and start training utterances in the Understanding section.
What is an open Wit AI app?
An open Wit AI app shares intents, entities, traits, and validated utterances with the community while keeping live traffic private. Open apps let new developers leverage shared training data to improve recognition faster.
Does Wit AI support speech synthesis?
Wit AI offers speech synthesis for English only. Speech recognition spans 30 languages, but text-to-speech output is limited to English per the official FAQ.
Where do I find my Wit AI access token?
After creating a Wit AI app, open the Settings tab in the Wit console. Your access token appears there and is used to authenticate HTTP API queries against your trained model.