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SLNG// Pricing 2026

Plans, hidden costs, and cheaper alternatives compared

Is SLNG// worth the price?

75/10

The pricing for SLNG// appears fair, especially with a generous Hobby tier offering a $4 credit.

The Pro tier at $49/month with included credit and rollover is competitive, though additional concurrency can quickly increase costs. This structure is best for developers and small to medium businesses exploring or scaling voice AI applications.

Pricing Plans

Hobby

$0

  • One time $4 usage credit
  • Concurrency: 2 (fixed)
  • Shared model access
  • Agent templates & behavioural guardrails
  • Standard routing
  • Community support

Pro

$49 Included credit (rolls over)/month

  • Includes $49 usage credit / month
  • Concurrency: 6 (+6 for $199 / month)
  • Shared Production Pool
  • Agent custom profiles
  • Regional failover
  • Email support

Enterprise

Custom

  • Volume pricing
  • Volume discounting
  • Concurrency: custom
  • Dedicated capacity & SLAs
  • Burst Capacity ( up to 1.5x )
  • Compliance-grade region guarantees
  • Dedicated support + slack channel
  • Support & Infra SLAs

Hidden Costs & Gotchas

Concurrency beyond Pro tier adds $199/month per 6 units.

Usage exceeding included credit will incur additional charges.

Enterprise tier requires custom negotiation for pricing.

No annual discount explicitly mentioned for Pro tier.

Which Plan Do You Need?

Developers experimenting with voice AI

SMBs needing scalable voice solutions

Companies requiring regional compliance

How SLNG// Compares to Competitors

Compared to AWS Polly, which charges per character, SLNG//'s credit-based system offers more predictable monthly costs for moderate usage. While Google Cloud Text-to-Speech also has usage-based pricing, SLNG//'s focus on unified models and compliance might justify its Pro tier's $49/month for businesses prioritizing these features over raw character volume.

SLNG// Pricing FAQ

How much does SLNG// cost?

SLNG// starts at $49/month on the Pro plan. A free plan is also available with limited features.

Does SLNG// have a free plan?

Yes. SLNG// offers a free plan called "Hobby". It includes: One time $4 usage credit, Concurrency: 2 (fixed), Shared model access.

Is there a cheaper alternative to SLNG//?

Yes. Popular alternatives to SLNG// include Whisper, Deepgram, AssemblyAI, Rev. Free alternatives include Whisper, Deepgram, Rev. Compare them side-by-side on Toolradar.

Cheaper alternatives to SLNG//

Direct competitors with similar features. Many offer free tiers or lower per-seat pricing.