AI Security Platform
Provably safe,
not “probably safe”
Detect policy violations and block harmful prompts or responses deterministically, faster and cheaper than a guard LLM.
Analysis latency measured in milliseconds. Zero retention of your conversation data. No additional LLM in the loop.
Free plan · No credit card required





See Hyperfence in action: no sign-up required.
Chat with a live AI model running behind a real Hyperfence instance. Watch prompts get inspected, policies enforced, and threats stopped in real time.
What's included
Start protecting your AI today, for free
Vector Hyperfencing
Preset mathematically-defined safe zones keep your AI on-topic and policy-compliant out of the box. Custom zones available on premium.
Usage & Token Stats
See token consumption and request volumes across your models. Deeper analytics and trend history are available on Pro.
Blocked Event Log
Metrics on blocked prompts and responses are logged against the reason for the block.














