Is ChatGPT Pro 500 Worth $500 a Month?A Three-Step Check Before You Upgrade

OpenAI's new Pro 500 plan is overkill for most software engineers, me included. For some business owners it can pay for itself, and the way to tell is a short piece of arithmetic, not a feeling.

What OpenAI announced

At DevDay this week, OpenAI announced Pro 500, a $500-a-month ChatGPT plan. According to OpenAI's DevDay 2026 recap, it gets you 25 times the usage of the $20 Plus plan, plus access to Ultrafast. Ultrafast is a speed tier that generates tokens up to 8 times faster in Codex, about 300 tokens per second, and up to 6 times faster in the API. In ChatGPT Work and Codex, it is available only on Pro 500 and Enterprise plans.

It landed the same day OpenAI told $200 Pro subscribers their allowance is shrinking.

I got that email on September 29. Starting October 30, the included usage in ChatGPT Work and Codex drops from 20 times Plus to 10 times. The GPT-6 Pro limit in Chat drops from 200 to 100 messages a week. The price stays the same, and current limits hold through October 29.

So the pitch to me is simple: pay $300 more a month and get 25 times Plus, instead of the 10 times I'm about to drop to.

OpenAI also gave existing Pro subscribers 62,500 usage credits, worth $2,500, that expire December 31. That buys me time to decide. It also means nobody on Pro 200 has to make this call in October.

Here's how I decided, so you can run it on your own work.

Step 1: Try the cheaper model before you buy more of the expensive one

OpenAI says its new GPT-6.1 Sol gets close to Astra on its own evaluations, at a fifth of Astra's standard token price. That is a vendor's claim about its own model, so treat it as a reason to test, not a result.

It does match what happened to me in September. I hit my limits, moved most of my work to cheaper models, and for most of it the results were close.

Sol is the first thing I'd test before paying for more Astra. The order matters. Every recurring job a cheaper model handles well leaves more of your existing allowance for the work that needs the expensive one. Do that first, and you may find the limit you were about to pay to raise is not the one you hit.

Step 2: Ask what the speed actually buys you

Ultrafast makes tokens come out up to 8 times faster. Token speed is only one part of an agent run, so the job itself doesn't finish 8 times sooner.

There is also a usage cost that is easy to miss. OpenAI's speed documentation says that for GPT-6 Astra, Ultrafast uses included subscription limits at 8 times the standard rate. A plan with 25 times the usage of Plus goes a lot less far if you run everything fast.

Then ask when you actually need the answer.

Astra is my walk-away model. I start long jobs before bed and read the results with coffee. If a run finishes an hour earlier while I'm asleep, I've gained nothing. The speed is real. It just lands at a time when nobody is there to use it.

Step 3: Do the hourly math

The upgrade is $300 a month. If an hour of your time is worth $100, Pro 500 has to give you back three hours a month you'd otherwise spend waiting. If your hour is worth $300, it needs one.

Note the word "waiting". The hours that count are the ones where you would otherwise sit in front of a screen until the agent finishes. Hours where you were doing something else anyway are not recovered by making the agent faster.

That's where it can make sense for a business owner. If you sit watching an agent while a customer waits, or your whole day is blocked on one answer, speed is real money.

I don't work like that. I queue things up and switch tasks.

What I'm doing, and what I'd tell a business owner

My order is: keep Pro 200, spend the credits before December 31, test Sol on the jobs I give Astra, and look again in January.

If what you want is a Dot, OpenAI's new always-on agent, you don't need the $500 plan for it. OpenAI's email to Pro subscribers says dots are included for all Pro customers, and that conversations with your dot and the work it does directly don't draw on your ChatGPT usage allowance.

The person I'd tell to buy Pro 500 today runs a business, values an hour of their time well above $100, and loses real hours each month waiting on an agent while someone else waits on them. For everyone else, the cheaper model and the credits come first.

Anyway.

Speed is worth $500 when someone is waiting on it. Overnight, nobody is.

What's the most you'd pay a month for an AI tool, and what would it have to give back?