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c15t vs Osano

Choose c15t for native consent components and control of vendor code and records. Compare Osano's classification, managed operations and service guarantees.

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Choose c15t for control your developers can inspect.

c15t is the stronger fit when your product team needs to understand and change how consent affects the application. Its components, vendor rules and backend are open source.

This page compares Osano's commercial consent platform. Its separate open-source Cookie Consent project has a different licence scope.

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Timed on the same page.

Cookiebench loads each consent manager 15 times on the same Next.js page and times how long its banner takes to appear. Times read on 9 October 2026.

c15t

65ms

On desktop. 241 ms on a mid-tier phone.

See the evidence

Osano

608ms

On desktop. 2.24 s on a mid-tier phone.

See the evidence

c15t’s banner appears 543 ms sooner than Osano’s on desktop.

Compare the implementation and the service.

What you needc15tOsano commercial CMP
Integrate with application codeNative framework components and hooksHosted CMP with JavaScript functions and events
Match your interfaceThemes, component parts or headless UIBanner editor and custom CSS
Control vendor executionRegistered integrations and explicit consent rulesCookie classification and configured tag blocking
Choose the Next.js responseServer, streamed or browser consent resolutionHosted script integration
Keep consent recordsInth hosts the backend and stores records in its database. Self-hosting is optionalManaged records with consent search
Change and run the engineApache-2.0 source and a deployable backendCommercial platform
Classify site cookies automaticallyNot included in the c15t packagesAI-assisted cookie classification
Get a contractual fines guaranteeNot included with the open-source softwareAdvertised guarantee with conditions
Budget for the serviceNo software licence fee. Backend costs remainContracted traffic based on delivery of Osano.js

Review consent with the feature that needs it.

With c15t, your team declares a vendor beside the application feature that introduces it. The integration connects that vendor to consent state.

The same state can drive a privacy settings screen or a blocked video placeholder. Use headless APIs when your design needs different markup.

Osano also has a JavaScript API. c15t gives you native framework state and the implementation behind that state, so your team can trace behaviour through its own code.

Moving off Osano across many sites?

Inth builds c15t and runs migrations for large teams, from the first audit to the day you remove the old script.

Talk to Inth

Install c15t. Get 42 integrations.

c15t maintains each typed helper. Most helpers load their vendor only after consent, and stop it when the visitor withdraws consent.

Import each helper from @c15t/integrations.

Browse the integrations

Start in minutes.

Paste this line into your agent. It reads the setup brief and does each step.

Ask your coding agent
Set up c15t in my app: c15t.com/SKILL.md

The setup brief is at /SKILL.md. For the docs, agents can read /llms.txt and /llms-full.txt, or use the MCP server at with no sign-in.

Inth hosts the backend, the policy rules and the IAB CMP ID.

Compare c15t with your consent tool.

The facts about each tool come from its own published pages.

Read the comparison overview