Best OpenSecureAI Prompt Firewall Alternatives in 2026
The top OpenSecureAI Prompt Firewall alternatives are Enkrypt AI Guardrails, VotalAI and OpenAI Guardrails: 15 AI guardrail software our editors would look at instead of OpenSecureAI Prompt Firewall, in our ranking order.
OpenSecureAI Prompt Firewall: A focused prompt firewall for injection, secrets, PII, and policy enforcement. Where it falls short: the verified feature set is narrower than broader guardrail suites.
Switching from OpenSecureAI Prompt Firewall? For most ai guardrail software buyers the best OpenSecureAI Prompt Firewall alternative is Enkrypt AI Guardrails, built for teams needing broad production guardrails. On a budget, OpenGuardrails starts at $10/mo, against $49/mo for OpenSecureAI Prompt Firewall.
Why People Look for an OpenSecureAI Prompt Firewall Alternative
- The verified feature set is narrower than broader guardrail suites
- Paid checkout is not self-serve
- Team seats, SSO, custom rules, and SLA are planned
- Paid from $49/mo — OpenGuardrails is $10/mo
Quick Picks by What You Need
- Best overallEnkrypt AI Guardrails9.4
Teams needing broad production guardrails
Visit Enkrypt AI Guardrails - Lowest priceOpenGuardrails7.8
Paid plans from $10/mo
Visit OpenGuardrails - Best free optionEnkrypt AI Guardrails9.4
Has a free plan
Visit Enkrypt AI Guardrails
All 15 OpenSecureAI Prompt Firewall Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forTeams needing broad production guardrails
- Better than OpenSecureAI Prompt Firewall:
- Editor score 9.4 vs 7.7
Broad runtime controls for teams securing production AI systems.
- Jailbreak detection
- Prompt injection defense
- PII detection
9.4/10★★★★★Visit Enkrypt AI -
Best forOrganizations wanting broad hybrid protection
- Better than OpenSecureAI Prompt Firewall:
- Editor score 9.2 vs 7.7
Broad hybrid guardrails for prompts, agents, data, tools, and audit workflows.
9.2/10★★★★★Visit VotalAI -
Best forOpenAI-oriented teams needing customizable checks
- Better than OpenSecureAI Prompt Firewall:
- Editor score 9.0 vs 7.7
A flexible, OpenAI-focused guardrail framework for validating LLM workflows.
- Jailbreak detection
- Prompt injection defense
- PII detection
9.0/10★★★★☆Visit site -
Best forTeams wanting open-source, flexible guardrails
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.8 vs 7.7
A flexible open-source framework for checking LLM inputs, outputs, and application risks.
8.8/10★★★★☆Visit Guardrails AI -
Best forDevelopers building self-hosted AI controls
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.7 vs 7.7
A broad self-hosted toolkit for developers enforcing AI policies across application flows.
8.7/10★★★★☆Visit NVIDIA -
Best forAWS-centered teams needing extensive controls
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.6 vs 7.7
A broad AWS guardrail layer for teams that need detailed AI content controls.
8.6/10★★★★☆Visit AWS -
Best forSecurity teams monitoring AI runtime activity
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.4 vs 7.7
A security-focused runtime layer for monitoring and controlling production AI activity.
- Jailbreak detection
- Prompt injection defense
- PII detection
8.4/10★★★★☆Visit HiddenLayer -
Best forFramework-agnostic enterprise agent governance
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.3 vs 7.7
A framework-agnostic control plane for evaluating and blocking risky agent actions.
- Prompt injection defense
- PII detection
- Custom policies
8.3/10★★★★☆Visit Splunk -
Best forTeams needing affordable runtime evaluation
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.2 vs 7.7
Affordable runtime evaluation with policy enforcement, detection, and gateway integrations.
- Jailbreak detection
- Prompt injection defense
- PII detection
8.2/10★★★★☆Visit Fiddler -
Best forTeams wanting free runtime safety enforcement
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.1 vs 7.7
Runtime inspection and enforcement for teams protecting production AI applications.
- Jailbreak detection
- Prompt injection defense
- PII detection
8.1/10★★★★☆Visit Openlayer -
Best forTeams wanting a low-cost API guardrail layer
- Better than OpenSecureAI Prompt Firewall:
- Editor score 8.0 vs 7.7
A low-cost API guardrail layer covering content risks, agent tools, data protection, and audits.
- Jailbreak detection
- Prompt injection defense
- PII detection
8.0/10★★★★☆Explore Pangea AI -
Best forEnterprises protecting agents and tool calls
- Better than OpenSecureAI Prompt Firewall:
- Editor score 7.9 vs 7.7
A broad runtime guardrail layer for enterprises securing agents and tool calls.
7.9/10★★★★☆Visit Check Point -
Best forSmall teams wanting inexpensive policy enforcement
- Better than OpenSecureAI Prompt Firewall:
- Paid from: $10/mo vs $49/mo
- Editor score 7.8 vs 7.7
Affordable runtime guardrails for teams monitoring agent actions, data, and tool calls.
- Prompt injection defense
- PII detection
- Custom policies
7.8/10★★★★☆Visit OpenGuardrails -
Best forTeams focused on AI red-team testing
- Better than OpenSecureAI Prompt Firewall:
- Paid from: $19/mo vs $49/mo
A strong fit for AI red-team testing, with broad model coverage and a free entry plan.
7.6/10★★★★☆Visit PromptGuard -
Best forDevelopers wanting open-source scanner services
A focused, self-hosted scanner toolkit for developers securing LLM inputs and outputs.
7.5/10★★★★☆Visit LLM Guard
OpenSecureAI Prompt Firewall Alternatives: Common Questions
What is the best alternative to OpenSecureAI Prompt Firewall?
Enkrypt AI Guardrails: #1 in our AI Guardrail Software ranking, with an editor score of 9.4 out of 10. Broad runtime controls for teams securing production AI systems.
Is there a free alternative to OpenSecureAI Prompt Firewall?
Yes. Enkrypt AI Guardrails, OpenAI Guardrails, Guardrails AI, NVIDIA NeMo Guardrails and Splunk Guardrails have a free plan or a free tier (10 of the 15 alternatives on this page).
What is the cheapest paid alternative to OpenSecureAI Prompt Firewall?
Of the alternatives here that publish a price, OpenGuardrails starts lowest, at $10/mo.
Why do people look for OpenSecureAI Prompt Firewall alternatives?
The verified feature set is narrower than broader guardrail suites; Paid checkout is not self-serve; Team seats, SSO, custom rules, and SLA are planned.
How do I switch from OpenSecureAI Prompt Firewall?
Export your data from OpenSecureAI Prompt Firewall (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel OpenSecureAI Prompt Firewall.
How to Switch from OpenSecureAI Prompt Firewall
- Export your data from OpenSecureAI Prompt Firewall (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel OpenSecureAI Prompt Firewall.
OpenSecureAI Prompt Firewall vs Each Alternative
| # | Tool | Free plan | Paid from | Deployment | Prompt injection defense | PII detection | Score |
|---|---|---|---|---|---|---|---|
| 14 | OpenSecureAI Prompt Firewall | Yes | $49/mo | Hybrid | Yes | Yes | 7.7 |
| 1 | Enkrypt AI Guardrails | Yes | $134/mo | Yes | Yes | 9.4 | |
| 2 | VotalAI | 9.2 | |||||
| 3 | OpenAI Guardrails | Free | Hybrid | Yes | Yes | 9.0 | |
| 4 | Guardrails AI | Free | 8.8 | ||||
| 5 | NVIDIA NeMo Guardrails | Free | 8.7 | ||||
| 6 | Amazon Bedrock Guardrails | No | $0.00075/unit usage-based | 8.6 | |||
| 7 | HiddenLayer AI Runtime Security | Hybrid | Yes | Yes | 8.4 | ||
| 8 | Splunk Guardrails | Yes | $100/unit/mo | Hybrid | Yes | Yes | 8.3 |
| 9 | Fiddler Guardrails | Yes | $0.002/unit usage-based | Hybrid | Yes | Yes | 8.2 |
| 10 | Openlayer Guardrails | Yes | Hybrid | Yes | Yes | 8.1 | |
| 11 | Pangea AI Guard | Yes | Hybrid | Yes | Yes | 8.0 | |
| 12 | Check Point AI Guardrails | 7.9 | |||||
| 13 | OpenGuardrails | No | $10/mo | Hybrid | Yes | Yes | 7.8 |
| 14 | PromptGuard | Yes | $19/seat/mo | 7.6 | |||
| 15 | LLM Guard | Free | 7.5 |
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
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