Quick answer
The cheapest fix is usually not another tool: it is a smaller model, shorter sessions, and API billing for overflow. If you need a different client, OpenCode with a low-cost provider or Codex on a lower tier can cost less. Free tiers exist but are for evaluation, not daily work.
The options
| Option | Saves | Costs |
|---|---|---|
| Smaller model | Large | Some reasoning quality |
| Shorter sessions | Large | A little setup work |
| API overflow | Avoids upgrades | Variable spend |
| OpenCode + cheap provider | Medium | Provider variance |
| Codex lower tier | Medium | Different model family |
Try them in this order
- Measure tokens per task for one week.
- Switch exploration to a smaller model.
- Start a new session per task.
- Add API billing only for the overflow.
- Change tools only if the numbers still do not work.
What not to do
- Do not share one seat across people.
- Do not compare a free tier with a paid plan and call it cheaper.
- Do not ignore retries, which often double the real cost.
- Do not optimise price per token while ignoring cost per completed task.
Cheaper options and their trade-off
| Option | Cheaper because | Cost you accept |
|---|---|---|
| Smaller Claude model | Lower rate per token | More attempts on hard tasks |
| API on demand | No idle subscription | Uncapped invoice |
| Third-party provider | Lower list price | Different model behaviour |
| Free tiers | Zero price | Tight limits and smaller models |
A cheaper tool that needs three attempts is not cheaper. Measure cost per completed task for a week before switching a workflow, and keep the old tool available for the tasks that need it.
See z.ai vs Claude Code for a worked comparison and the cheapest subscriptions for low-cost options.
Questions, answered
What is the cheapest way to use Claude Code?
Use a smaller model, short sessions, and a lower plan tier with API overflow. The cheapest configuration depends on your task mix.
Is OpenCode a drop-in replacement?
It is a capable client, but workflows and model behavior differ. Test one real task before switching.
Are free AI coding plans enough?
For evaluation yes. For daily agent work they usually run out quickly.