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Software · head to head

AI21 Labs vs Assistant.to

AI21 Labs logo

AI21 Labs

Software

Enterprise language AI solutions

From
Free
Rated
-
Full reviewWebsite
Assistant.to logo

Assistant.to

Software

The easiest way to schedule meetings

From
Free
Rated
-
Full reviewWebsite

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; Assistant.to no longer an independent product. assistant.to redirects to Cirrus Insight, which absorbed it
  • They diverge on capability: AI21 Labs covers Jamba models, Assistant.to covers In-email scheduling.

Where they differ

Only the attributes on which AI21 Labs and Assistant.to actually diverge.

Attributes where AI21 Labs and Assistant.to differ
AttributeAI21 LabsAssistant.to
Pricing modelusage-basedfreemium
PlatformsApi, CloudChrome-extension
Founded20172014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

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 Assistant.to

  • In-email scheduling
  • One-click booking
  • Google Calendar sync
  • Time zone handling
  • Simple interface
  • Gmail
  • Google Calendar
  • Chrome-extension support

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 Assistant.to
  • Building and optimising production AI agents with Maestronot Assistant.to
  • Routing between models to control cost and accuracynot Assistant.to
  • Long-horizon agentic tasks needing stateful workspacesnot Assistant.to

Assistant.to

  • Schedulingnot AI21 Labs
  • Appointment bookingnot AI21 Labs
  • Time trackingnot AI21 Labs
  • Resource managementnot AI21 Labs
  • Team coordinationnot 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

Assistant.to

  • No longer an independent product. assistant.to redirects to Cirrus Insight, which absorbed it
  • Its scheduling now sits inside a wider Salesforce-focused sales tool rather than being a standalone add-in

Pricing, plan by plan

AI21 Labs

Free
  • Free TrialFree
    • Limited usage
    • API access
  • Jamba$0.2/per-million-input-tokens
    • 256K context
    • Hybrid architecture

Assistant.to

Free
  • FreeFree
    • In-email scheduling
    • Basic features
  • Pro$5/month
    • Team features
    • Custom branding
    • Priority support

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.
AI21 Labs review

Choose Assistant.to if

  • You need in-email scheduling.
  • You want to start without paying.
  • You work on Chrome-extension.
  • You also want one-click booking.
Assistant.to review

Questions people ask

Is AI21 Labs or Assistant.to better?
Neither clearly leads. AI21 Labs starts at Free and Assistant.to at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AI21 Labs or Assistant.to?
AI21 Labs starts at Free and Assistant.to at Free.
Does AI21 Labs or Assistant.to run on more platforms?
AI21 Labs runs on Api, Cloud. Assistant.to runs on Chrome-extension.
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 Assistant.to is typically brought in for.
What can AI21 Labs do that Assistant.to cannot?
AI21 Labs covers Jamba models, Long context, RAG engine, Writing tools. Assistant.to covers In-email scheduling, One-click booking, Google Calendar sync, Time zone handling.
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Related pages

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