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Best LLM Firewalls & Prompt Guardrails in 2026
Real-time AI application security engines preventing prompt injections, jailbreaks, data exfiltration, and toxic outputs.
Lakera Guard
Verified
Freemium
Enterprise LLM firewall defending against prompt injection, jailbreaks, and data loss
Best For: Product teams exposing customer-facing LLM agents, chatbots, and autonomous tools.
Prompt Security
Paid
Comprehensive security suite protecting every touchpoint of GenAI adoption in the enterprise
Best For: Chief Information Security Officers (CISOs) needing complete visibility and policy control over employee AI adoption.