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For developers building AI software

Cost and safety tools
for your AI agents.

AI agents are software that use AI to complete tasks, such as answering customer questions. RunLog helps developers compare the AI behind them, estimate costs and catch repeated actions.

See a simple cost example

Free to explore. No sign-in or AI account needed.

Already choosing a model? Compare results →
What does an AI agent do?

It uses AI and tools to complete a task in steps. A support agent might:

  1. Read a customer’s question
  2. Search the help articles
  3. Draft a reply

Requests can cost money and take time. If the software gets stuck repeating a step, both can add up. RunLog helps developers spot that waste.

Find the tool for your next step

Browser tool · No account

Estimate running cost

See what a prompt could cost across models, then scale the estimate to your expected usage.

Estimate cost →
Published results · No account

Choose an AI model

Compare test results for quality, speed and cost. Find candidates to test with your own agent.

Compare models →
Browser demo + code integration

Stop repeated actions

Try a repeating tool call. See how Loop-Guard detects it, then add a guard to your code.

Try Loop-Guard →
For developers · GitHub setup

Check a change before release

Use Ship-Check to check recorded agent actions against your release rules in GitHub.

See how Ship-Check works →

A few things to know

Can I try it without an account?

Yes. Cost estimates, published benchmarks and the Loop-Guard demo are open to everyone.

Do I have to use AI to explore?

No. The example calculator and loop demo run in your browser without sending a request to an AI or connecting your accounts.

Does RunLog run my agent?

You build and run your agent. RunLog gives you tools to measure costs and add checks to your workflow.

Will these results match my project?

Estimates depend on your inputs. Benchmarks use prepared tasks. Use both as a starting point for your own tests.