All coding subscriptions
ChatGPT Pro (20x)
OpenAIultra$200
Last checked: 2026-07-29
- First limit you hit
- 300–1,800 Codex messages per 5-hour window
- Equivalent API value
- $887Priced on GPT-5.6 Sol
- Value multiple
- 4.44×
- When it runs out
- —
- Scenario
- Interactive use only
Allowances
This plan publishes no plan-wide allowance; the per-model limits below are the allowance. Limits of the same kind and period share one window, so they are alternatives — you spend it on whichever model you pick, and they do not add up.
GPT-5.6 Sol300–1,800Codex messages per 5-hour window
›The vendor's own wording
The usage-limits table gives Pro 20x / GPT-5.6 Sol as "300-1800" messages per 5-hour window.Open the source page
GPT-5.6 Terra400–2,200Codex messages per 5-hour window
›The vendor's own wording
The usage-limits table gives Pro 20x / GPT-5.6 Terra as "400-2200" messages per 5-hour window.Open the source page
GPT-5.6 Luna1,000–5,600Codex messages per 5-hour window
›The vendor's own wording
The usage-limits table gives Pro 20x / GPT-5.6 Luna as "1000-5600" messages per 5-hour window.Open the source page
Models included
| Model | Capability | Burn rate | |
|---|---|---|---|
| GPT-5.6 Soldefaultown cap 300–1,800 | untiered | — | |
| GPT-5.6 Terraown cap 400–2,200 | untiered | — | |
| GPT-5.6 Lunaown cap 1,000–5,600 | frontier | — |
Subscription versus your own API key
This compares two ways of working the same way — in an IDE or CLI, where BYOK tools make a direct API key a real option. It is not a claim that subscriptions are cheaper than the API in general.
| Model | Effective price / 1M tokens | vs API rate | Breakeven |
|---|---|---|---|
| GPT-5.6 Soluntiered | $1.12 | 0.23 | 40.2M |
| GPT-5.6 Terrauntiered | $0.84 | 0.34 | 80.4M |
| GPT-5.6 Lunafrontier | $0.34 | 0.34 | 200.9M |
Usage terms
Quoted from the vendor's own terms. We do not give legal advice.
The Terms of Use, under "What you cannot do", state: "You may not use our Services for any illegal, harmful, or abusive activity. For example, you may not: ... Automatically or programmatically extract data or Output (defined below)." The same list also prohibits users from "circumvent any rate limits or restrictions or bypass any protective measures or safety mitigations we put on our Services". Note that the clause carries no carve-out for API access — the exemption is not in the wording, so the separation rests on billing rather than on the prohibition itself: OpenAI's pricing page attaches the Codex allowances above to the ChatGPT plan and lists API access as its own line, "usage-based pricing per API documentation".
Change history
- 2026-07-27Recorded from the seed file
- 2026-07-27Recorded from the seed file
- 2026-07-27Recorded from the seed file