Pricing
1¢ per agent minute.
STT and TTS for your voice agent — any model on SLNG. One bundled price, no per-model surcharges, no minimums.
Mix and match
Pick models by use case, language, or preference — every STT and TTS model on SLNG is included in the same 1¢ per minute of agent call time. **Yes, STT & TTS inclusive.**
Scale to thousands
Whether it's 10, 100, or 1,000+ concurrent agents — shared or dedicated capacity that grows with you.
Any region, your choice
Deploy your voice edge wherever you need it. One region or all 11 of them — you choose.
LLM Optimizer
Use your existing LLM — we just halve the cost and halve the latency. Included at no extra cost.
Plans
SLNG does not gate core capability by plan. You get the same Voice AI Cloud on every plan across these core capabilities.
Transparent pricing per model
Pro plan includes $49 in credit. >10K STT minutes OR > 5K TTS minutes. Depending on the models you select.
Any model, any provider
Access proprietary and open-source models across all regions and protocols. BYOK included.
One API to run everything
Route STT, LLM, and TTS through a unified gateway with smart selection and enforced behavior.
Compliance-ready execution
Region and country rules are enforced at runtime, so workloads stay aligned as you scale.
Compare plans by how you run
All plans run on the same Voice AI Cloud. What changes is how much scale, support, and guarantees you get.
Optional add-ons
Add-ons that scale with your workload
Keep the core simple. Add-ons extend capacity and guarantees when volume, risk, or regulation require more certainty. They don’t unlock features. They reinforce execution.
Reserved concurrency
Reserve call-handling capacity so peak traffic stays predictable. Usage billing stays the same.
Guaranteed execution
SLA-backed execution with defined failure handling, retries, and escalation paths.
Compliance guarantees
Stronger residency, retention, and deletion guarantees for regulated environments.
Enterprise integrations
Connect SLNG with CRM, CX, and internal systems for production workflows.
Advanced observability
Export logs, traces, and audits to your data stack for deeper monitoring and compliance.
Support and operations
Priority support, clear escalation, and operational guidance for mission-critical workloads.
Faqs
How is SLNG priced?
SLNG uses usage-based pricing by default. You pay for the voice workloads you run, such as telephony minutes, speech-to-text, text-to-speech, and model inference. Plans define scale, guarantees, control, and data ownership, not access to features.
What’s included in every SLNG plan?
Every plan includes access to the same Voice AI Cloud, with all supported models, regions, runtimes, and APIs. SLNG does not gate core capability by plan.
What’s the difference between Hobby, Pro, and Enterprise?
The difference is not capability. Plans vary by scale, execution guarantees, behaviour control, data ownership, integrations, and support.
How does usage-based billing work?
Usage is billed independently of your plan. You pay for actual voice usage, while plans and add-ons define concurrency, guarantees, and operational certainty.
How does concurrency pricing work?
Concurrency defines how many calls can run at the same time. Additional capacity can be reserved using add-ons, while usage billing stays the same.
Is SLNG suitable for regulated environments?
Yes. SLNG enforces region and country rules at runtime. Enterprise plans add residency, retention, auditability, and SLA-backed guarantees for regulated workloads.
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