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Amazon Lex vs Salesforce Service Cloud Chat

Amazon Lex logo

Amazon Lex

Live Chat

AWS conversational AI service

From
Free
Rated
-
Full reviewWebsite
Salesforce Service Cloud Chat logo

Salesforce Service Cloud Chat

Live Chat

Live chat integrated with Salesforce Service Cloud

From
$25/month
Rated
-
Full reviewWebsite

The short version

  • Only Amazon Lex has a free tier, so it costs nothing to try first.
  • Each has a real cost: Amazon Lex pay-as-you-go model with no standard free tier, only AWS free credits for new customers (6 months, $200 limit); Salesforce Service Cloud Chat entry-level pricing of $25 per user per month is relatively expensive for small businesses
  • They diverge on capability: Amazon Lex covers Speech recognition, Salesforce Service Cloud Chat covers Live chat messaging.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Amazon Lex and Salesforce Service Cloud Chat actually diverge.

Attributes where Amazon Lex and Salesforce Service Cloud Chat differ
AttributeAmazon LexSalesforce Service Cloud Chat
Starting priceFree$25/month
Pricing modelusage-basedUnknown
Free tierYesNo
PlatformsWeb, AWS CloudWeb, Mobile apps
Founded20061999

Identical on both: user rating (Not yet rated), category (Live Chat).

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 Amazon Lex

  • Speech recognition
  • Natural language understanding
  • Voice and text
  • Lambda integration
  • AWS services
  • Lambda
  • DynamoDB
  • SNS

Only in Salesforce Service Cloud Chat

  • Live chat messaging
  • CRM integration
  • Agent desktop integration
  • Visitor tracking
  • Salesforce ecosystem
  • Slack
  • Gmail
  • Microsoft Teams

Both cover

  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Amazon Lex

  • Chatbot developmentnot Salesforce Service Cloud Chat
  • Voice-based conversational AInot Salesforce Service Cloud Chat
  • Natural language understandingnot Salesforce Service Cloud Chat

Salesforce Service Cloud Chat

  • Customer engagementnot Amazon Lex
  • Lead generationnot Amazon Lex
  • Customer supportnot Amazon Lex
  • Sales automationnot Amazon Lex

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Amazon Lex

  • Pay-as-you-go model with no standard free tier, only AWS free credits for new customers (6 months, $200 limit)
  • Speech requests cost $0.004 each, text requests $0.00075 each, training costs $0.50 per minute
  • Variable costs can accumulate quickly for high-volume applications

Salesforce Service Cloud Chat

  • Entry-level pricing of $25 per user per month is relatively expensive for small businesses
  • Requires Salesforce CRM setup and integration for full functionality
  • Limited standalone capability outside of Salesforce ecosystem
  • Complex configuration required for advanced features

Pricing, plan by plan

Amazon Lex

Free
  • Standard Usage$0.004/per speech request
    • Speech requests at $0.004 each
  • Text Requests$0.00075/per text request
    • Text requests at $0.00075 each

Salesforce Service Cloud Chat

$25/month

No published plan breakdown. See the Salesforce Service Cloud Chat review.

Which should you pick?

Choose Amazon Lex if

  • You need speech recognition.
  • You want to start without paying.
  • You work on Web, AWS Cloud.
  • You also want natural language understanding.
Amazon Lex review

Choose Salesforce Service Cloud Chat if

  • You need live chat messaging.
  • You work on Web, Mobile apps.
  • You also want crm integration.
Salesforce Service Cloud Chat review

Questions people ask

Is Amazon Lex or Salesforce Service Cloud Chat better?
Neither clearly leads. Amazon Lex starts at Free and Salesforce Service Cloud Chat at $25/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Amazon Lex or Salesforce Service Cloud Chat?
Amazon Lex has a free tier; the other does not. Paid plans start at Free for Amazon Lex and $25/month for Salesforce Service Cloud Chat.
Does Amazon Lex or Salesforce Service Cloud Chat run on more platforms?
Amazon Lex runs on Web, AWS Cloud. Salesforce Service Cloud Chat runs on Web, Mobile apps.
Can I use Amazon Lex for free?
Yes. Amazon Lex has a free tier, so you can try it without paying. Salesforce Service Cloud Chat starts at $25/month.
What is Amazon Lex best used for?
Amazon Lex is most often used for chatbot development, voice-based conversational ai, natural language understanding. Of those, chatbot development and voice-based conversational ai are not what Salesforce Service Cloud Chat is typically brought in for.
What can Amazon Lex do that Salesforce Service Cloud Chat cannot?
Amazon Lex covers Speech recognition, Natural language understanding, Voice and text, Lambda integration. Salesforce Service Cloud Chat covers Live chat messaging, CRM integration, Agent desktop integration, Visitor tracking. Both handle Web support.

Answered from the vendors’ own pages

Amazon Lex: How much does Amazon Lex cost?

Amazon Lex charges $0.004 per speech request and $0.00075 per text request with no upfront commitments or minimum fees required.

Source
Salesforce Service Cloud Chat: What is Salesforce Service Cloud Chat?

Salesforce Chat is a real-time customer engagement tool enabling businesses to connect with customers through personalized live chat interactions embedded in apps and on websites, with AI-powered chatbot support.

Source
Amazon Lex: Is there a free tier for Amazon Lex?

Yes, new AWS customers receive 10,000 text requests and 5,000 speech requests per month free for the first year. Additional $200 in AWS Free Tier credits are available for new customers as of July 15, 2025, with all credits expiring within 12 months.

Source
Salesforce Service Cloud Chat: What is the pricing for Salesforce Service Cloud Chat?

Salesforce Service Cloud entry-level pricing starts at $25 per user per month, with multiple tiers available and add-ons ranging from $50 to $75 depending on required features.

Source
Amazon Lex: What is the example monthly cost for Amazon Lex?

For 8,000 speech requests ($32) and 2,000 text requests ($1.50), the approximate monthly total is $33.50, though actual costs vary based on usage volume.

Source
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