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AI · head to head

AI21 Labs vs Etherscan

AI21 Labs logo

AI21 Labs

AI

Enterprise language AI solutions

From
Free
Rated
-
Full reviewWebsite
Etherscan logo

Etherscan

Crypto

The Ethereum blockchain explorer

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; Etherscan the free API plan is capped at 3 calls per second and 100,000 calls per day
  • They diverge on capability: AI21 Labs covers Jamba models, Etherscan covers Block Explorer.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where AI21 Labs and Etherscan differ
AttributeAI21 LabsEtherscan
Pricing modelusage-basedfreemium
PlatformsApi, CloudWeb, Api
CategoryAICrypto
Founded20172015

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
  • Cloud support

Only in Etherscan

  • Block Explorer
  • Transaction Tracking
  • Token Tracker
  • Contract Verification
  • Gas Tracker
  • Ethereum mainnet
  • Testnets
  • Web support

Both cover

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

Etherscan

  • Looking up Ethereum transactions, addresses and token transfers in a block explorernot AI21 Labs
  • Reading and verifying deployed smart contract source codenot AI21 Labs
  • Pulling on-chain data into an application through the explorer APInot 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

Etherscan

  • The free API plan is capped at 3 calls per second and 100,000 calls per day
  • The free plan requires attribution and covers only selected chains rather than all supported chains
  • API Pro endpoints are withheld below the Standard plan at $199 per month
  • The $49 per month Lite plan raises the rate limit to only 5 calls per second and keeps the same 100,000 calls per day as the free tier
  • Rate limits top out at 30 calls per second even on the $899 per month Pro Plus plan
  • The Address Metadata endpoint requires Pro Plus at $899 per month and is limited to one app license
  • Metadata CSV export and dedicated support are only in Metadata Enterprise, which is quoted by contact with no published price
  • The 10% and 15% discounts apply only to quarterly and yearly prepayment

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

Etherscan

Free
  • FreeFree
    • 3 calls per second rate limit
    • Up to 100,000 API calls per day
    • Selected chains with 90% coverage
  • Lite$49/month
    • 5 calls per second rate limit
    • Up to 100,000 API calls per day
    • All supported chains with community endpoints
  • Standard$199/month
    • 10 calls per second rate limit
    • Up to 200,000 API calls per day
    • API Pro endpoints access
  • Advanced$299/month
    • 20 calls per second rate limit
    • Up to 500,000 API calls per day

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 Etherscan if

  • You need block explorer.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want transaction tracking.
Etherscan review

Questions people ask

Is AI21 Labs or Etherscan better?
Neither clearly leads. AI21 Labs starts at Free and Etherscan at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AI21 Labs or Etherscan?
AI21 Labs starts at Free and Etherscan at Free.
Does AI21 Labs or Etherscan run on more platforms?
AI21 Labs runs on Api, Cloud. Etherscan runs on Web, Api.
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 Etherscan is typically brought in for.
What can AI21 Labs do that Etherscan cannot?
AI21 Labs covers Jamba models, Long context, RAG engine, Writing tools. Etherscan covers Block Explorer, Transaction Tracking, Token Tracker, Contract Verification. Both handle Api support.

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
Etherscan: Is Etherscan API free to use?

Etherscan offers a free plan with a 3 calls per second rate limit and up to 100,000 API calls per day. The free tier provides access to selected chains with 90% coverage and requires attribution. Additional premium plans start at $49 per month.

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
Etherscan: What are Etherscan's rate limits?

Etherscan provides different rate limits based on plan: Free plan allows 3 calls per second, Lite allows 5 calls per second, Standard allows 10 calls per second, Advanced and Professional allow 20-30 calls per second, and Pro Plus allows 30 calls per second with up to 1,500,000 API calls per day.

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
Etherscan: Can I get a refund for Etherscan API payments?

No. Etherscan explicitly states that all payments made are non-refundable. Accounts are activated within 24 hours for API Pro accounts, and auto-renewal is enabled by default through Stripe.

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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