There is no universal number of AI coding subscriptions a solo developer needs. Inventory what you already pay for, track accepted work through a full billing cycle, and keep a second subscription only when it repeatedly solves work the first cannot handle as well and its incremental value justifies another bill. With no current development work, zero paid subscriptions can be reasonable. This guide is about renewing, cancelling or adding plans; for choosing a coding workflow, see the agent selection guide.
Separate three kinds of spending
A subscription, extra usage after included allowances, and API-key calls are different line items. The same model name does not mean the same allowance. Terms vary by plan and payment route, so verify your own account before buying.
| Entry point | Billing boundary checked on 17 October 2026 | Check in your account |
|---|---|---|
| Codex | ChatGPT plans include eligible Codex usage. Additional credits and local API-key usage are separate; an API key does not draw from the subscription allowance. Official pricing | Sign-in method, remaining plan usage, credits, API invoices |
| Claude Code | Pro/Max limits are shared with Claude. Enabled usage credits charge for requests beyond included use. If ANTHROPIC_API_KEY is active, Claude Code uses the API key and bills API usage. Plan and API guidance, usage credits |
Authentication, credit settings, auto-reload, invoices |
| Cursor | Current plans distinguish included usage from prepaid third-party model use; legacy plans have different pools and on-demand rules. On individual plans, a provider bills model use made with your own API key. Plans, usage rules | Current versus legacy plan, model route, prepaid or on-demand settings |
This is a checklist of verified boundaries, not a fixed price table or a promise that every feature is available in your account.
Run one billing-cycle renewal audit
Download the empty task log and bill log. Neither contains invented usage. Align the observation period with a full renewal cycle:
- Inventory actual payments. Enter each subscription, extra-usage charge and API payment in the bill log. Mark a plan you would retain for non-coding work anyway; its full price is not automatically incremental coding spend.
- Count each task once. Record the task, tools used, acceptance result and your own review time. Count completion only after your tests or acceptance check pass. Generated code alone is not accepted work.
- Identify the second tool’s contribution. When you use another product, write what blocked the first and what the second demonstrably fixed. Running the same prompt twice is not, by itself, a unique benefit.
- Decide before renewal. Compare the avoidable fixed and extra charges with uniquely accepted work and review effort saved. If the evidence is thin, retain only the tool you actually use and observe another cycle; one attractive demo cannot establish a monthly return.
In the task log, set accepted to yes, no or pending. Put a checkable difference in unique_contribution, or leave it blank. Enter each actual payment once in the bill log, rather than duplicating a monthly fee for every task. Keep invoice currencies as billed and account for conversion using your own settlement record.
Decide how many to keep
| Evidence at renewal | Decision | Next check |
|---|---|---|
| No current Agent-ready project; existing free or already-paid access is enough | Zero new paid plans is reasonable | Trial when a concrete task appears |
| One tool completes most work; the other has no distinct contribution | Keep one and check the other’s cancellation terms before renewal | Observe the next cycle for a real gap |
| A second tool repeatedly handles a different task class, and saved work or avoided risk merits the extra bill | Two may be justified, with explicit roles | Recheck charges and use every cycle |
| Several plans all hit limits or fail acceptance | Inspect task scope, model choice, permissions and review process first | Then compare extra usage, upgrades or switching |
For example, suppose you use tool A for fixes and subscribe to tool B for review. At the end of the cycle, B’s only recorded output is a second summary, with no verified issue A missed and no reduction in your review work. That is not evidence to renew B. If B repeatedly finds a specific defect that you verify and fix, record the defect, acceptance and extra cost before deciding to keep it. This is a decision example, not a measured comparison of products.
Average cost per task is not enough. Dividing a monthly fee by accepted tasks reveals idle plans, but not the second plan’s marginal value. Compare what you would actually save by cancelling with the distinct capability and human time you would lose. Do not count an unverified output as a benefit. Team security, data agreements and procurement rules can also constrain the choice beyond a personal cost sheet.
Sources and limits
The product billing boundaries were checked against the linked official pages on 17 October 2026. Current search results include plan-price lists and tool rankings, so this guide instead provides a task-and-invoice renewal method. The worksheet and decisions are editorial analysis, not a study of reader accounts, real invoices or a cross-product benchmark. We have no measured search volume, indexing or conversion data. For a repeatable product trial, see Claude Code versus Cursor; for API spending, see the API cost guide (Chinese).