Free
For prototypes and early experiments.
$0Free forever
Start free- 100K events / month
- 1 team member
- 30-day data retention
- 1 project · 5 apps · 1 tenant
- 1 GB storage
- Community support
Pricing
Inference Runs FreePlans For Every Builder
Whether you’re building a productivity app, running a neuroscience study, or powering a wellness platform, start with our open-source SDKs and grow to full-scale cloud intelligence.
Inference runs free on-device. No fees.Included in every paid plan
- On-device inference
- HSI Standard
- Core SDK
- Cloud Extended
Scale
For startups shipping production apps.
$29/mo
Start 14-day free trial- Everything in Free
- 1M events / month
- 5 team members + unlimited workspaces
- Syni Chat + Channels
- Advanced analytics
- Unlimited data retention
Recommended Team
For growing product and digital-health teams.
$99/mo
Start 15-day free trial- Everything in Scale
- 10M events / month
- 25 team members
- Syni Tools
- Synapse
- 1 TB storage
Research
For labs and human-state research.
$249/mo
Start 30-day free trial- Everything in Team
- 100M events / month
- 1M research events / month
- 50 team members
- Synheart Lab + Personas
- Research analytics
Enterprise
For custom scale, integrations, and support.
Custom
Contact Sales- Custom quote for your scale
- Private deployments & dedicated infrastructure
- Custom SLAs & compliance support
- Dedicated support
- hi@synheart.ai
Paid plans are billed monthly · No credit card for Free · Cancel anytime · On-device inference is free on every plan, forever
Plan details
Compare plans
The cards show the key differences. Use the table for limits, tooling, and support details.
| Feature | Free | Scale | Team | Research | Enterprise |
|---|---|---|---|---|---|
| Capacity | |||||
| Data retention | 30 days | Unlimited | Unlimited | Unlimited | Unlimited |
| Workspace limits | 1 project · 5 apps · 1 tenant | Unlimited | Unlimited | Unlimited | Unlimited |
| Team members | 1 | 5 | 25 | 50 | Custom |
| Events / month | 100K | 1M | 1M | 100M | Custom |
| Products | |||||
| Behavior SDK | Not included | Included | Included | Included | Included |
| Syni cloud services | Not included | Included | Included | Included | Included |
| Research suite | Not included | Not included | Not included | Included | Included |
| Analytics | Not included | Advanced | Advanced | Research | Advanced |
| Operations | |||||
| Data export | Not included | Not included | 100K | Included | Included |
| Support | Community | Basic | Priority | Priority | Dedicated |
| SLA | Not included | Not included | 99.9% uptime | 99.9% uptime | Custom |
| Custom integrations | Not included | Not included | Not included | Included | Included |
Pay as you go
Usage Based Pricing
Pay only for what you use beyond your plan’s included events All Usage is on-device first. Cloud features are optional
Syni Cloud Chat
- Prompt tokens
- $1.50 / 1M events
- Completion tokens
- $2.50 / 1M events
Ingestion & storage
- HSI ingestion
- $1.00 / 1M events
- Research signal events
- $3.00 / 1M events
- Storage
- $0.10 / GB-month
Team
- Additional seat
- $15.00 / seat / month
Prices exclude applicable taxes and are subject to change
view full details in the pricing docs.
For data teams
Enterprise Data Pipelines
Bulk export and high-volume ingestion for teams that run human-state data through their own pipelines — on dedicated throughput and retention.
Connect more
Wearable Connectors
Connect WHOOP, Garmin, Apple Watch, Fitbit, Pixel, and Polar through the SDK or cloud APIs — standardized into one signal stream.
The platform
Why Synheart
Human State Interface Infrastructure
A stack for building apps that adapt to human cognitive and physiological states.
Local-First & Private
Inference runs on-device. No cloud processing, no biometric lock-in, and full control over data.
Open SDK & Runtime
Use the HSI SDK, prototype locally, and scale to production when needed.
Research & Production Ready
Designed for production and research with realtime ingestion, analytics, and scalable pipelines.
FAQ
Frequently Asked Questions
Start building with human state
On-device inference is free forever. Cloud plans add Syni, analytics, and team tooling when you need them.