PromptGuard vs Amazon Bedrock Guardrails
Bedrock Guardrails is already in the console if you are on Bedrock, and for a single-cloud application that is a real advantage, there is nothing to add and nothing to integrate. The question is what happens when the application stops being single-cloud, or when the model you want is not one Bedrock serves.
We wrote this, so read it accordingly. Everything in the Amazon Bedrock Guardrails column was taken from their own public material, read 11 August 2026, and each claim links its source with the date we read it. Where their material does not state something we say that, rather than claiming they cannot do it. Our own figures come from the same constants the rest of this site renders, and what we say about how PromptGuard works follows our own documentation.
- Provider coverage
- PromptGuard
Model-agnostic. One policy in front of every major provider and framework.
Amazon Bedrock GuardrailsApplies to models served through Amazon Bedrock.
Source: AWS Bedrock Guardrails documentation, read 11 August 2026
- Runs inside your network
- PromptGuard
Managed cloud, hybrid self-host in your VPC, or air-gapped behind default-deny egress.
Amazon Bedrock GuardrailsRuns as an AWS service, in AWS.
Source: AWS Bedrock Guardrails documentation, read 11 August 2026
- Evidence behind the detection claim
- PromptGuard
F1 0.887, 95% CI [0.874, 0.900], across 2,369 samples from 8 datasets (5 independently published). Methodology and datasets named.
Amazon Bedrock GuardrailsNo published benchmark for prompt-attack detection accuracy.Absence of a published claim, not of a capability.
Source: AWS Bedrock Guardrails documentation, read 11 August 2026
- Pricing model
- PromptGuard
Public. $0 with $5 of usage a month and no card, then $20/month.
Amazon Bedrock GuardrailsPer text unit, charged per filter policy applied. Published in the AWS pricing pages.
Source: AWS Bedrock pricing, read 11 August 2026
- Engine composition
- PromptGuard
15 detectors across 6 layers; 46 PII entity types detected and redacted.
Amazon Bedrock GuardrailsConfigurable policies: content filters, denied topics, word filters, PII handling, prompt-attack detection, grounding checks.
Source: AWS Bedrock Guardrails documentation, read 11 August 2026
- Portability of the policy
- PromptGuard
The same policy and the same engine follow you across providers and environments.
Amazon Bedrock GuardrailsConfigured within Bedrock.
Source: AWS Bedrock Guardrails documentation, read 11 August 2026
Choose Amazon Bedrock Guardrails when
- Your application is entirely on Bedrock, is expected to stay there, and you would rather have one vendor and one bill.
- You want content filtering and denied topics configured in the same console as the model, with no extra integration work at all.
- Consolidated AWS billing and existing AWS procurement matter more than portability.
Choose PromptGuard when
- You call more than one provider. We sit in front of OpenAI, Anthropic, Gemini, Azure, Bedrock, Mistral, Cohere and others behind one policy, so switching models does not mean rewriting your controls.
- You need the controls to run outside a hyperscaler, in your own VPC or air-gapped.
- You want a published benchmark for the detection itself rather than a feature list.
Sources: AWS Bedrock Guardrails documentation (read 11 August 2026) · AWS Bedrock pricing (read 11 August 2026). Think we have something wrong? Tell us and we will correct it.
One engine in front of the AI you buildand the AI your people use
Your applications swap a base URL, no code change, and are protected in under 2 minutes. On your people's devices, an agent inspects the AI tools it covers and names the ones it does not. Every request is judged before it reaches the provider, in our cloud or entirely inside your network.