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AI21 Labs vs Welcome

AI21 Labs logo

AI21 Labs

AI

Enterprise language AI solutions

From
Free
Rated
-
Full reviewWebsite
Welcome logo

Welcome

Webinars

Enterprise event experience platform for memorable virtual events

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only AI21 Labs has a free tier, so it costs nothing to try first.
  • Each has a real cost: AI21 Labs the free allowance is $10 of credit lasting 7 days rather than an ongoing free tier; Welcome the Internet Archive's capture of Welcome's homepage on 3 January 2021 confirmed its virtual events platform is sold only via 'Book a demo', with no price figure published, only customer case metrics (an average NPS score of 92 cited for one client).
  • They diverge on capability: AI21 Labs covers Jamba models, Welcome covers Immersive event spaces.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which AI21 Labs and Welcome actually diverge.

Attributes where AI21 Labs and Welcome differ
AttributeAI21 LabsWelcome
Starting priceFreeOn request
Pricing modelusage-basedsubscription
Free tierYesNo
PlatformsApi, CloudWeb, IOS, Android
CategoryAIWebinars
Founded20172020

Identical on both: 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 Welcome

  • Immersive event spaces
  • Networking lounges
  • Breakout sessions
  • Event analytics
  • White-label options
  • Salesforce
  • HubSpot
  • 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 Welcome
  • Building and optimising production AI agents with Maestronot Welcome
  • Routing between models to control cost and accuracynot Welcome
  • Long-horizon agentic tasks needing stateful workspacesnot Welcome

Welcome

  • Virtual Eventsnot AI21 Labs
  • Enterprise Eventsnot AI21 Labs
  • Networkingnot 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

Welcome

  • The Internet Archive's capture of Welcome's homepage on 3 January 2021 confirmed its virtual events platform is sold only via 'Book a demo', with no price figure published, only customer case metrics (an average NPS score of 92 cited for one client).

Pricing, plan by plan

AI21 Labs

Free
  • Free TrialFree
    • 10 USD credits
    • 7-day trial period
    • No credit card required
  • Pay As You Go$undefined/mo
    • Usage-based pricing model
    • Access to all Foundation model APIs and SDK
    • Unlimited seats
  • Custom Plan$undefined/mo
    • Volume discounts on token pricing
    • Premium API rate limits
    • Private cloud hosting option

Welcome

On request
  • Professional$999/month
    • Up to 1000 attendees
    • Custom event spaces
    • Basic analytics
  • Business$2499/month
    • Up to 5000 attendees
    • Advanced customization
    • Networking features
  • Enterprise$4999/month
    • Unlimited attendees
    • White-label solution
    • Dedicated 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 Welcome if

  • You need immersive event spaces.
  • You work on Web, IOS, Android.
  • You also want networking lounges.
Welcome review

Questions people ask

Is AI21 Labs or Welcome better?
Neither clearly leads. AI21 Labs starts at Free and Welcome at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AI21 Labs or Welcome?
AI21 Labs has a free tier; the other does not. Paid plans start at Free for AI21 Labs and On request for Welcome.
Does AI21 Labs or Welcome run on more platforms?
AI21 Labs runs on Api, Cloud. Welcome runs on Web, IOS, Android.
Can I use AI21 Labs for free?
Yes. AI21 Labs has a free tier, so you can try it without paying. Welcome starts at On request.
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 Welcome is typically brought in for.
What can AI21 Labs do that Welcome cannot?
AI21 Labs covers Jamba models, Long context, RAG engine, Writing tools. Welcome covers Immersive event spaces, Networking lounges, Breakout sessions, Event analytics.

Answered from the vendors’ own pages

AI21 Labs: How much do AI21's Jamba Mini and Jamba Large models cost?

Jamba Mini costs $0.2 per 1M input tokens and $0.4 per 1M output tokens. Jamba Large is priced at $2 per 1M input tokens and $8 per 1M output tokens. Both models use usage-based billing with no monthly minimums.

Source
AI21 Labs: Does AI21 offer a free trial?

Yes, AI21 provides a free trial with 10 USD in credits for 7 days, no credit card required. The trial grants access to all Foundation models via API and SDK.

Source
AI21 Labs: How do AI21's custom plans and volume discounts work?

Custom plans with volume discounts are available for enterprises but require contacting sales. These plans can include premium API rate limits, private cloud hosting, priority support, dedicated account managers, and expert consultancy.

Source
AI21 Labs: What does AI21 mean by 30% token efficiency savings?

AI21 claims their tokenization delivers approximately 30% more text per token compared to other providers, which can reduce effective costs by roughly 30%. This applies primarily to English-language text averaging 1 word or 6 characters per token.

Source
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