Shortlist by what you need
Start here if you know why you are leaving CalypsoAI.
Want the closest match?
Prompt SecurityMost similar to CalypsoAI in what it does, its category and its price.
Visit (opens Prompt Security in a new tab)Need a free plan?
LakeraHas a free plan, rated 4.3 out of 5. CalypsoAI has none.
Visit (opens Lakera in a new tab)Want the best rated?
Dynamo AIRated 4.3 out of 5 in our review, against 4.1 for CalypsoAI.
Visit (opens Dynamo AI in a new tab)
At a glance
Green means better than CalypsoAI, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 CalypsoAIBaseline | 4.1 | Not listed | No | AI guardrails, now part of F5, protecting generative AI applications in production. | |
| Prompt Security | 4.1Same | Not listed | No | AI security platform covering prompt injection, data leakage and shadow AI use | vs CalypsoAI |
 Enkrypt AI | 4.1Same | Not listed | No | Security and safety testing for AI systems, covering threat detection and ongoing monitoring. | vs CalypsoAI |
 DeepKeep | 4.0−0.1 | Not listed | No | AI-native security platform that firewalls, red-teams, and scans LLMs and computer-vision models against adversarial threats. | vs CalypsoAI |
 Zenity | 4.2+0.1 | Not listed | No | Security and governance for AI agents, from build time through to runtime. | vs CalypsoAI |
| Lakera | 4.3+0.2 | Free | YesCalypsoAI has none | Real-time API that blocks prompt injection, jailbreaks, and data leakage in LLM applications. | vs CalypsoAI |
| Dynamo AI | 4.3+0.2 | Not listed | No | Enterprise AI security and compliance platform that evaluates, red-teams, and applies guardrails to generative models before and after deployment. | vs CalypsoAI |
 Traceable | 4.1Same | Not listed | No | Discovers every API you have, tests them in the pipeline, and blocks attacks at runtime. | vs CalypsoAI |
 Levo.ai | 3.7−0.4 | Not listed | No | Runtime security for both traditional APIs and AI-native apps - discovers, red-teams, and firewalls your AI agents, LLMs, and MCP servers, not just your endpoints. | vs CalypsoAI |
The alternatives in detail
In order of how closely each one matches CalypsoAI.
Prompt Security
4.1Not listed
vs CalypsoAISame
AI security platform covering prompt injection, data leakage and shadow AI use.
- Inspection of prompts and responses in both directions
- Prompt injection and jailbreak detection
- Data leakage prevention across AI tool usage
Addresses shadow AI usage, not only sanctioned applications
Now part of a larger platform, which shapes procurement
Enkrypt AI
4.1Not listed
vs CalypsoAISame
Security and safety testing for AI systems, covering threat detection and ongoing monitoring.
- Security and safety testing specific to AI systems
- Detection of prompt injection, jailbreaks and harmful output
- Vulnerability remediation rather than reporting alone
Addresses failure modes conventional application security misses
Only relevant to organisations actually deploying AI systems
DeepKeep
4.0Not listed
vs CalypsoAI−0.1
AI-native security platform that firewalls, red-teams, and scans LLMs and computer-vision models against adversarial threats.
- AI Firewall that inspects prompts and outputs for injection and leakage attempts
- Automated AI red teaming that probes models for jailbreaks before deployment
- Model scanning for vulnerabilities across LLM and computer-vision systems
Covers both LLMs and computer-vision models, a wider scope than most LLM-only security tools
No published pricing, so budgeting requires a sales conversation up front
Zenity
4.2Not listed
vs CalypsoAI+0.1
Security and governance for AI agents, from build time through to runtime.
- Security and governance across the agent lifecycle
- Runtime controls rather than pre-deployment review only
- Visibility into what agents actually decided and did
Runtime governance matches how autonomous agents actually fail
Only relevant once agents hold real permissions
Lakera
4.3Free
vs CalypsoAI+0.2Free plan
Real-time API that blocks prompt injection, jailbreaks, and data leakage in LLM applications.
- Real-time prompt injection and jailbreak detection API
- Automated red-teaming through Lakera Red
- Sensitive-data leakage screening on model outputs
Free Community tier gives developers a real way to test the product before buying
Paid tier pricing is no longer public and now runs through Check Point's enterprise sales process
Dynamo AI
4.3Not listed
vs CalypsoAI+0.2
Enterprise AI security and compliance platform that evaluates, red-teams, and applies guardrails to generative models before and after deployment.
- DynamoEval automated red-teaming across 20+ privacy and safety tests
- DynamoEnhance targeted risk remediation for flagged model behavior
- DynamoGuard real-time production guardrails against jailbreaks and prompt injection
Full-lifecycle coverage from pre-deployment testing through live guardrails in one suite
No published pricing means budgeting requires a sales conversation before evaluation
Traceable
4.1Not listed
vs CalypsoAISame
Discovers every API you have, tests them in the pipeline, and blocks attacks at runtime.
- Continuous API discovery and risk assessment
- Security testing inside the development lifecycle
- Runtime protection against live attacks
Finds the shadow APIs that inventories miss
No published pricing
Levo.ai
3.7Not listed
vs CalypsoAI−0.4
Runtime security for both traditional APIs and AI-native apps - discovers, red-teams, and firewalls your AI agents, LLMs, and MCP servers, not just your endpoints.
- Runtime visibility into AI agents, LLMs, and MCP servers
- AI red-teaming and threat detection
- Prompt-injection and tool-abuse prevention (AI gateway/firewall)
Covers both traditional API security and AI-specific runtime risk in one platform
No published pricing - requires a demo or sign-up request
FAQ
Questions people ask
Is CalypsoAI free?
CalypsoAI does not list a free plan. Check its pricing page for current plans.
What is the best free alternative to CalypsoAI?
Lakera is the highest-rated alternative here with a free plan (4.3 out of 5).
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.