Is Azure AI Content Safety free? What it actually costs in 2026
Azure AI Content Safety's free tier (F0) checks 5,000 text records and 5,000 images a month and simply stops when the limit is hit; the Standard tier is $0.375 per 1,000 text records and $0.75 per 1,000 images (East US).
Free – Web: 5,000 text records and 5,000 images a month; usage halts at the limit rather than billing. Standard (S0) meters per 1,000 records; commitment tiers start at $321–338 a month for 1M text records and $160–169 for 250K images.
What the free tier actually includes
- 5,000 text records a month
- 5,000 images a month
- Usage stops at the limit — no overage on the free tier
Where the wall is
Record 5,001, which a moderated chat product reaches in an afternoon. Standard billing then runs at $0.375 per 1,000 texts — cheap per call, but every message in and out is a record, so the meter runs at conversation speed.
After that: Standard: $0.375 per 1,000 text records, $0.75 per 1,000 images (East US, pay as you go); commitment tiers: 1M text records $338 a month (Azure) or $321 (connected container), 250K images $169 / $160, overage $0.338–0.675 per 1,000.
Can you self-host Azure AI Content Safety? No — cloud only
Content Safety is an Azure service (a connected-container option exists under the commitment tiers). NeMo Guardrails, LLM Guard and Guardrails AI are the open-source guardrail toolkits compared here.
What it actually takes to run one yourself
Real RAM against the documented minimum, monthly cost, setup time, and the one thing that catches people out.
Self-hosting NVIDIA NeMo Guardrails
Self-hosting Microsoft Presidio
When paying is still the right call
Stay if you are on Azure and this is a compliance checkbox. When an auditor wants a named vendor with a documented moderation policy and an SLA, a self-hosted classifier is a harder conversation regardless of whether it performs better. Stay if you have no one to own the classifier, thresholds and false-positive review, because a badly tuned guardrail is worse than none — it blocks real users while missing real attacks. And stay if you need image moderation at scale, where the open options are genuinely weaker. The tools below are for teams who need policies the taxonomy cannot express, or cannot send content off-network at all.
What you are locked into
Low. Moderation is a stateless call at a well-defined boundary, so replacing it is a change at one integration point rather than a migration. What needs redoing is threshold tuning — the severity levels you have calibrated against are Microsoft's scale, and any replacement needs its own calibration run against real traffic before you trust it in blocking mode.
If you would rather not pay: NVIDIA NeMo Guardrails
NVIDIA NeMo Guardrails
Write your policy as rails, in a language built for it.
Free and Apache-2.0. Runs wherever you run it.
See all 5 Azure AI Content Safety alternatives comparedCompare the free options head-to-head
Read from Microsoft's own pricing and documentation on 2026-09-27 — 24 days ago. Vendors change prices without notice; confirm before you commit.