AI Tools · head to head
AI21 Labs vs Flock

Flock
Communication & Collaboration
Organized team communication platform
- From
- Free
- Rated
- -
The short version
- Each has a real cost: AI21 Labs the free allowance is $10 of credit lasting 7 days rather than an ongoing free tier; Flock the Starter plan only makes the most recent 10,000 messages searchable and caps public channels at 10
- They diverge on capability: AI21 Labs covers Jamba models, Flock covers Team chat.
Where they differ
Only the attributes on which AI21 Labs and Flock actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in AI21 Labs
- Jamba models
- Long context
- RAG engine
- Writing tools
- REST API
- Amazon Bedrock
- Cloud platforms
- Api support
Only in Flock
- Team chat
- Channels
- Threads
- File sharing
- Polls
- Integrations
- Mobile apps
- Slack
What people use each for
The jobs each tool is most often brought in to do.
AI21 Labs
- Running long-context tasks on the Jamba model familynot Flock
- Building and optimising production AI agents with Maestronot Flock
- Routing between models to control cost and accuracynot Flock
- Long-horizon agentic tasks needing stateful workspacesnot Flock
Flock
- Team messaging with channels, direct messages and file sharingnot AI21 Labs
- Running polls, to-dos and reminders inside a chat workspacenot AI21 Labs
- Video conferencing and screen sharing for small teamsnot AI21 Labs
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
AI21 Labs
- The free allowance is $10 of credit lasting 7 days rather than an ongoing free tier
- Jamba Large is $2 per million input tokens and $8 per million output, so output-heavy work costs four times as much as input
- Volume discounts, private cloud hosting and higher rate limits require a custom plan
- Standard rate limits are not published
Flock
- The Starter plan only makes the most recent 10,000 messages searchable and caps public channels at 10
- Starter storage is 5 GB for the entire team, against 10 GB per member on Pro and 20 GB per member on Enterprise
- Starter allows a single team admin and a single approved domain
- Group video calls and screen sharing require the Pro plan; Starter is limited to 1-1 video calls
- Group video calls are capped at 20 participants even on Enterprise
- Single Sign-On and Active Directory sync are Enterprise only
- Enterprise is quote only, with no published rate, and is positioned for organisations with 100 or more members
- Unlimited auto-join and announcement channels require Enterprise; Starter and Pro get one of each
Pricing, plan by plan
AI21 Labs
Free- Free TrialFree
- Limited usage
- API access
- Jamba$0.2/per-million-input-tokens
- 256K context
- Hybrid architecture
Flock
Free- FreeFree
- Unlimited chats
- Channels
- File sharing
- Pro$5/month
- Everything in Free
- Advanced search
- API access
Which should you pick?
Choose AI21 Labs if
- You need jamba models.
- You want to start without paying.
- You work on Api, Cloud.
- You also want long context.
Choose Flock if
- You need team chat.
- You want to start without paying.
- You work on Web, Windows, Macos, Ios, Android.
- You also want channels.
Questions people ask
- Is AI21 Labs or Flock better?
- Neither clearly leads. AI21 Labs starts at Free and Flock at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, AI21 Labs or Flock?
- AI21 Labs starts at Free and Flock at Free.
- Does AI21 Labs or Flock run on more platforms?
- AI21 Labs runs on Api, Cloud. Flock runs on Web, Windows, Macos, Ios, Android.
- Can I use AI21 Labs for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is AI21 Labs best used for?
- AI21 Labs is most often used for running long-context tasks on the jamba model family, building and optimising production ai agents with maestro, routing between models to control cost and accuracy, long-horizon agentic tasks needing stateful workspaces. Of those, running long-context tasks on the jamba model family and building and optimising production ai agents with maestro are not what Flock is typically brought in for.
- What can AI21 Labs do that Flock cannot?
- AI21 Labs covers Jamba models, Long context, RAG engine, Writing tools. Flock covers Team chat, Channels, Threads, File sharing.
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- AI21 Labs vs Lark
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- AI21 Labs vs Quo
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- AI21 Labs vs Signal
- AI21 Labs vs TeamViewer
- AI21 Labs vs Textline
- Flock vs Pika
- Flock vs Anthropic API
- Flock vs D-ID
- Flock vs Fathom
- Flock vs Stable Diffusion
- Flock vs ChatGPT
- Flock vs Copy.ai
- Flock vs HeyGen
- Flock vs Jasper
- Flock vs Leonardo AI
- Flock vs Murf
- Flock vs Perplexity
- Flock vs Pi
- Flock vs Play.ht
- Flock vs Replicate
- Flock vs Replika
- Flock vs Rytr
- Flock vs Together AI
- Flock vs Zoom
- Flock vs Microsoft Teams
- Flock vs Loom
- Flock vs RingCentral Video
- Flock vs Slack
- Flock vs Telegram
- Flock vs Webex by Cisco
- Flock vs Chanty
- Flock vs Chatwork
- Flock vs Google Chat
- Flock vs Grasshopper
- Flock vs Lark
- Flock vs Mattermost
- Flock vs Quo
- Flock vs Rocket.Chat
- Flock vs Signal
- Flock vs TeamViewer
- Flock vs Textline

