theo crunches the numbers: $500 plan almost covers running GPT-6.1 Sol Ultrafast full-time
nikunjhanda · x · 2026-10-12
- theo audited four weeks of his own usage: he sends 477–583 prompts a week, while one weekly limit covers 425 Ultrafast turns (8x usage), so all-Ultrafast usage lands at 112–137% of the cap — slightly over.
- For comparison, Regular mode uses only 14–17% of a weekly limit and Fast mode 35–43%.
- Keeping 69–88% of prompts on Ultrafast and the rest on Regular, he'd run out on day 5–6 of 7; only 1 of the last 4 weeks would have fit within one Ultrafast limit.
- One Ultrafast week is worth $845 at API prices ($115/week of subscription value), making the $500/mo ChatGPT Pro Max plan arguably a good deal. Verdict: he can probably main GPT-6.1 Sol Ultrafast, just barely hitting the limits.
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