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Communication

Otter.ai vs Slack: Pricing Comparison 2026

Side-by-side pricing comparison of Otter.ai and Slack. See all plans, features, and costs at a glance.

Bottom line: Otter.ai starts at $8.33/mo, making it $0/mo cheaper than Slack ($8.75/mo). Slack offers a free plan.

Last updated: August 17, 2026

Data compiled by Arthur Jacquemin
Updated August 17, 2026
Try Otter.ai freeTry Slack freePrice updated 2d agoPrice updated 2d ago
Best Value

Slack - Slack offers a free plan.

Otter.ai vs Slack: Quick Pricing Facts

FeatureOtter.aiSlack
Starting Price$8.33/mo$8.75/mo
Number of Plans64
Free TierNoYes
Pricing Modelfreemiumper-seat
Annual DiscountN/AN/A

Otter.ai is the more affordable option, starting at $8.33/mo compared to Slack's $8.75/mo. Both are Communication tools with 10 combined pricing plans and 60 features compared.

Slack stands out with a free plan for getting started. Otter.ai uses freemium pricing while Slack uses per-seat pricing, which may affect your total cost at scale.

Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Communication needs.

Pricing Plans
Otter.ai
Otter.ai
Try free
Slack
Tier 1
Basic
Custom pricing
Start with Basic
Free
$0/monthCheapest
Includes
  • 90 days of message history
  • Up to 10 apps
  • 1:1 meetings
  • 1:1 external messages
  • Basic AI
  • AI conversation summaries
  • Slackbot (personal AI agent)
  • AI workflow generation
  • AI search
  • AI daily recaps
  • AI file summaries
  • SAML-based single sign-on
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Free
Tier 2
Pro
$17/month
Start with Pro
Pro
$9/monthCheapest
Includes
  • Unlimited message history
  • Unlimited app integrations
  • Group meetings
  • Group external messages
  • Basic AI
  • AI conversation summaries
  • Slackbot (personal AI agent)
  • AI workflow generation
  • AI search
  • AI daily recaps
  • AI file summaries
  • SAML-based single sign-on
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Pro
Tier 3
Business
$3024/month
Start with Business
Business+Popular
$18/monthCheapest
Includes
  • Unlimited message history
  • Unlimited app integrations
  • Group meetings
  • Group external messages
  • Advanced AI
  • AI conversation summaries
  • Slackbot (personal AI agent) NEW
  • AI workflow generation
  • AI search
  • AI daily recaps
  • AI file summaries
  • SAML-based single sign-on
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Business+
Tier 4
Enterprise
Custom pricing
Start with Enterprise
Enterprise+
Custom pricing
Includes
  • Unlimited message history
  • Unlimited app integrations
  • Group meetings
  • Group external messages
  • Enterprise-Grade AI
  • AI conversation summaries
  • Slackbot (personal AI agent) NEW
  • AI workflow generation
  • Enterprise search
  • AI daily recaps
  • AI file summaries
  • Multiple SAML configurations
  • SCIM user management
  • EMM integration support
  • Native data loss prevention
Start with Enterprise+
Tier 5
Pro
$8/monthCheapest
Start with Pro
-
Tier 6
Business
$20/monthCheapest
Start with Business
-

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Otter.ai

AI meeting transcription and note-taking assistant

View all Otter.ai plans

Slack

Channel-based messaging platform for teams

View all Slack plans

What Reviewers Say

Frequently Asked Questions: Otter.ai vs Slack

Which is cheaper, Otter.ai or Slack?
As of August 2026, Otter.ai starts at a lower price point. Otter.ai starts at $8.33/mo while Slack starts at $8.75/mo. However, the best value depends on the features you need at each tier.
How many pricing plans does Otter.ai have vs Slack?
Otter.ai offers 6 pricing plans, while Slack offers 4 plans. More plans typically means more flexibility to match your exact needs and budget.
Does Otter.ai or Slack offer a free plan?
Slack offers a free plan, while Otter.ai does not. If budget is a concern, Slack lets you get started at no cost.
What is the most popular Slack plan?
The Business+ plan is Slack's most popular tier, priced at $18/mo. Key features include Unlimited message history, Unlimited app integrations, Group meetings.
Does Otter.ai or Slack offer custom enterprise pricing?
Yes, both Otter.ai and Slack offer custom enterprise pricing tiers with quote-based pricing. Contact each vendor for a tailored quote.
What pricing models do Otter.ai and Slack use?
Otter.ai uses a freemium pricing model, while Slack uses per-seat pricing. The right model depends on your team size and usage patterns.
How do Otter.ai and Slack compare for Communication?
Both Otter.ai and Slack are Communication tools. Otter.ai offers 6 plans starting at $8.33/mo, while Slack offers 4 plans starting at $8.75/mo. Review the feature breakdowns above to see which better fits your Communication needs.
AI Recommendations

Sources

  1. Otter.ai Official Pricing- Vendor pricing page
  2. Slack Official Pricing- Vendor pricing page

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