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hCaptcha logo
hCaptcha
✓ verifiedFreemium

Privacy-focused CAPTCHA and bot/fraud-detection service, a drop-in reCAPTCHA alternative for websites and apps.

4.4M visits/mo
Fiddler AI logo
Fiddler AI
✓ verifiedFreemium

Enterprise AI observability and security platform to monitor, evaluate, and govern agentic and ML systems with guardrails.

51K visits/mo
Arize AI logo
Arize AI
✓ verifiedFreemium

AI observability and evaluation platform to trace, evaluate and improve LLM agents in production, with an open-source Phoenix core.

248K visits/mo
Lakera Guard logo
Lakera Guard
✓ verifiedFreemium

Security platform that guards GenAI apps and AI agents against prompt injection, data leaks and misuse for enterprise teams.

306K visits/mo
Resemble AI logo
Resemble AI
✓ verifiedFree trial

Generative-AI security platform for watermarking and detecting voice, image, and video deepfakes, built on its own voice-cloning models.

292K visits/mo14K saves
Pricing
Basic: Free
Pro: $139/month billed monthly, $99/month billed yearly
Enterprise: Contact sales

Free trial available

Free: $0 (real-time guardrails)
Developer: $0.002 per trace
AX Free: $0/mo (25k spans/mo)
AX Pro: $50/mo (50k spans/mo)

No public pricing

Free trial available

Flex plan: $0 to start (pay-per-use credits)
Team Seats: $20/month per user
Rapid voice clone: $2/month per voice
Pro voice clone: $5/month per voice
Voice design: $2/month per voice
Audio deepfake detection: $0.04 per second
Video deepfake detection: $0.07 per second

Free trial available

Core features
  • AI bot detection
  • Transaction fraud protection
  • Account-takeover (ATO) defense
  • Pull-based SMS MFA
  • Private Learning ML risk models
  • Two-line reCAPTCHA migration
  • Hundreds of integrations
  • End-to-end agentic and ML observability
  • Real-time guardrails (hallucination, PII, jailbreak)
  • Continuous evaluations and custom judges
  • Root-cause analysis and decision lineage
  • AI governance, risk, and compliance controls
  • Flexible SaaS, VPC, or on-prem deployment
  • Agent and LLM tracing
  • Large-scale evaluations
  • Open-source Phoenix observability
  • Alyx AI engineering agent
  • OpenTelemetry-based instrumentation
  • Experiments and prompt playgrounds
  • Runtime protection for AI agents and apps
  • Prompt-injection and jailbreak prevention
  • Data-leakage detection in prompts
  • Shadow-AI discovery across apps and browsers
  • Policy controls by user, app and action
  • AI red-teaming and adversarial testing
  • Multimodal deepfake detection for audio, image, and video
  • Invisible, persistent watermarking for media provenance
  • Real-time deepfake monitoring bot for live meetings
  • Voice cloning and text-to-speech generation
  • Pay-as-you-go credit-based Flex pricing plan
  • Enterprise on-premise deployment and SSO options
Use cases
  • Blocking bots and spam signups
  • Preventing account takeover
  • Reducing transaction and payment fraud
  • Stopping credential stuffing
  • Monitoring production AI agents
  • Enforcing safety guardrails on LLM apps
  • Evaluating and debugging model behavior
  • Governance and compliance for enterprise AI
  • Debugging AI agents in production
  • Measuring LLM output quality
  • Catching regressions before deploy
  • Securing conversational and RAG agents
  • Governing employee use of AI tools
  • Adversarial testing before deploying GenAI
  • Meeting AI compliance requirements
  • Enterprises verifying caller identity to prevent voice fraud
  • Media companies watermarking content for provenance tracking
  • Security teams monitoring live calls for deepfake impersonation
  • Developers building AI voice agents with cloned voices
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