Voice to text.
5x cheaper.

On-device when you can. Cloud when you need.

Cactus automatically routes audio between on-device for clear audio and cloud for noisy data.

Voice

Cactus Hybrid Router

On-Device

Cloud

Latency

120ms

Transcription

Cactus

Routing to On-Device

Auto-optimizing for accuracy & cost

Cactus Hybrid Cloud
Cloud accuracy. Without the cloud cost.

Cactus only hands off the complex requests to the cloud, running simple tasks on-device.

#include <cactus.h>

setenv("CACTUS_CLOUD_API_KEY", "your-api-key", 1); // optional hybrid cloud key

cactus_model_t model = cactus_init("path/to/weights");

char response[4096];

cactus_complete(model, messages, response, sizeof(response), nullptr, nullptr, callback);

Cost Savings

Over 80% of production transcription and LLM inference can be handled on-device.

<120ms

On-Device Latency

Real-time transcription. No round-trip to the cloud for clear audio.

Native

Optimized for every platform

We built Cactus as an on-device engine first. Optimized for the fastest inference on smartphones, laptops, and wearables.

Automatic Handoff

Cactus monitors audio quality in real-time. When conditions change, we seamlessly switch between on-device and cloud inference. Your app doesn't need to know the difference.

Privacy When You Need It

For sensitive applications, lock transcription to on-device only. Audio data never leaves the user's phone. HIPAA-friendly, GDPR-compliant, zero data retention.

Simple pricing.
Start free, scale as you grow.

No hidden fees. No surprises. Just inference that works.

Basic

Free

For side projects and experimentation.

Unlimited on-device inference
200 free cloud minutes
1M free cloud tokens
Hybrid routing
Community support
Open-source models
Basic analytics

Get started

Pro

Popular

Talk to us

For production apps and growing teams.

Pay-as-you-go cloud STT
Pay-as-you-go cloud LLM inference
SOTA hardware acceleration
Automatic cloud routing
Priority support
Real-time analytics
Custom models