How to try AI coding agents for free
AI coding agents are tools that can read your codebase, plan changes, edit files and run commands for you. There are now many of them, and most charge by usage or by monthly plan. Before you commit to one, you can usually try several for free. This guide covers where those free credits come from and how to compare agents without fooling yourself.
Where free agent credits come from
Free access to coding agents tends to come from a handful of places. Knowing them helps you search in the right spots.
- Built-in free tiers and daily allowances. Some tools give everyone a small amount of usage. PerkRadar lists Qoder, which lets free and paid individual users claim 100 credits every day.
- Signup credits and trial extensions. Promo codes from creators and launch partners can extend a standard trial or add bonus credits. Examples on PerkRadar include extra credits on Qoder's 14-day Pro trial, $250 in Kimchi coding-agent credits instead of the standard $50, and $100 in Hoplite credits for cloud coding agents.
- Provider credit offers. OpenAI lists an offer of $100 or 2,500 Codex credits.
- Student programs. Kiro lists 1,000 credits per month free for a year for students, and GitHub offers a free student plan with premium features.
- Open-source programs. Maintainers can find bigger offers, such as six months of ChatGPT Pro with Codex, six months of Claude Max 20x, free Copilot Pro for maintainers of popular repositories, and free access to Factory's Droid agents for contributors.
Eligibility for student and open-source programs is checked by the provider. Read the requirements before applying, and do not expect approval just because you meet the basics.
Set up a safe test environment first
Coding agents can run commands, install packages and change many files at once. That is the point of them, but it means you should test carefully.
- Use a throwaway copy of a real project, or a fresh branch you are happy to delete.
- Make sure your work is committed so you can see exactly what the agent changed with a diff.
- Do not give a trial tool access to production secrets, live databases or your main cloud account.
- If the agent asks for permission to run commands, read each one before you approve it.
- Check whether the tool requires a card on file. If it does, set a spending cap or note the date the trial converts to a paid plan.
Compare agents on the same task
Most people try one agent on one task, are impressed or disappointed, and move on. That tells you very little. A fairer test is to give every agent the same small set of real tasks from your own work.
Pick three tasks of different sizes. For example: fix a small bug with a clear reproduction, add a feature that touches a few files, and write tests for an existing module. Give each agent the same instructions and the same starting branch.
Then judge the results on things that matter to you. Did the code work on the first run? How much did you have to correct? Did it stay inside the files it needed to touch? How many credits did each task use?
Write down the credits used per task. That number is the best predictor of what the tool will cost you once the free period ends.
Make free credits last
Free agent credits disappear quickly if you use them for open-ended exploration. A few habits help.
- Give precise instructions with file names and acceptance criteria. Vague requests lead to long, expensive runs.
- Break big jobs into smaller steps and review between them.
- Use the cheaper or faster model option for simple edits if the tool offers a choice.
- Stop a run that is clearly heading the wrong way rather than letting it finish.
- Keep a short project notes file the agent can read, so it does not have to rediscover your setup every time.
App builders and code review tools
Not every AI coding product is a terminal agent. App builders turn a description into a working web app, and AI review tools comment on your pull requests. Both are worth testing if they match how you work.
PerkRadar lists codes for a free month of Lovable Pro, 30 days of Bolt, and a free month of CodeRabbit. Students can also find a 50% discount on Amp. As with any trial, check what happens to your projects and your plan when the free period ends.
Questions to ask before you pay
Free credits are a good way to learn what a tool can do. Before you move to a paid plan, look beyond the demo and check a few practical details on the provider's pricing and documentation pages.
- How is usage counted? Some tools charge per request, some per token or credit, and some per month with a fair-use limit.
- What happens when you hit the limit? Does the tool stop, slow down, or start charging overage?
- Can you set a monthly spending cap for yourself or your team?
- Which models does the plan include, and do the better models cost more credits?
- How does the tool handle your code? Read the data and privacy terms, especially for client or company work.
- Does it work with your editor, terminal and version control, or will you need to change how you work?
If two tools perform about the same on your test tasks, pick the one with clearer pricing. Predictable costs are worth a lot once the free period is over.
Decide before the trial ends
Put a reminder in your calendar two days before each trial or credit grant expires. On that day, look at your notes and ask a simple question: did this tool save me more time than it would cost?
If yes, pick a plan that matches the usage you measured. If no, cancel or let the credits lapse, and move on to the next tool. You can mark perks as claimed on PerkRadar so you remember what you have already tried.