Short answer: for most people, no. ChatGPT Plus ($20/month) and Claude Pro ($20/month) overlap on about 80% of everyday work, so paying $480 a year for both only makes sense if you hit the usage limits of one of them every week, or you depend on a feature that only exists inside one app (Claude Code, ChatGPT's voice mode, custom GPTs). If you mostly want to use whichever model is better for the task in front of you, one subscription plus pay-per-use access to the other is cheaper.
That's the summary. The rest of this post is the math, because "it depends" isn't an answer and the right call really does depend on how you use these things.
What you actually get for $20 each
Both plans cost the same at the monthly rate. Anthropic also sells Claude Pro at $17/month if you pay $200 up front for the year. OpenAI has a cheaper tier, ChatGPT Go, at $8/month in the US, but it's built around lighter usage and doesn't include things like Deep Research.
| ChatGPT Plus | Claude Pro | |
|---|---|---|
| Monthly price | $20 | $20 ($17/mo billed yearly) |
| Flagship models in the app | GPT-6 Astra and the GPT-6 family | Claude Opus 5.5 plus Sonnet |
| How limits work | Message caps on top models, then a fallback to a smaller model | Rolling usage windows plus a weekly cap |
| App-only extras | Custom GPTs, voice mode, image generation, Codex | Projects, Artifacts, Claude Code |
The models change every few weeks now, so don't anchor on the exact names. GPT-6 Astra shipped on September 3, Claude Opus 5.5 on September 22, and OpenAI put out GPT-6.1 Sol a week after that. Whatever I write about which one is "smarter" will be out of date by Christmas. What doesn't change as fast is how you use them.
Where each one still wins
I use both most days, and the split has been pretty stable through three model generations.
Claude is better at writing that has to sound like a person. Give it a messy draft and ask it to tighten it without changing the voice, and it actually keeps the voice. It's also better at following long, fussy instructions: "rewrite this in plain English, keep every number, don't add headings, under 300 words." Claude respects all four constraints more often.
ChatGPT is the better generalist app. Voice mode, image generation, file analysis, a huge library of custom GPTs, and a phone app that a lot of people's parents already know how to use. If you want one AI app for everything, including the stuff that isn't text, it's still ChatGPT.
For coding it's close, and it flips with every release. OpenAI's own charts put GPT-6 Astra ahead on several coding benchmarks, and it topped the crowdsourced Code Arena WebDev board at launch. Claude Opus 5.5 is cheaper per token and a lot of developers simply prefer how it reasons through a codebase. I wouldn't pick a subscription based on a benchmark chart that gets redrawn every month. I'd run my own repo through both and see which one I trust.
The real question: how often do you hit the limits?
This is what decides it. Open both apps and think honestly about the last month.
- If you hit Claude's usage limit in the middle of work at least once a week, you're a heavy user and a $20 flat rate is a good deal for you.
- If you never hit either limit, you're paying for headroom you don't use, twice.
- If you only use one of them for a specific job (say, Claude for editing client emails twice a week), you're paying $20 for maybe $2 worth of model time.
That third group is bigger than people think. When I went through my own usage earlier this year, most of my Claude Pro month was a handful of long writing sessions. The rest of the time I was in ChatGPT out of habit.
What the same usage costs on pay-per-use tokens
Here's the alternative I actually moved to. LazySusan gives you ChatGPT, Claude, Gemini, Grok and the rest under one account, and you pay with tokens: 600 tokens equals $1 of model usage. Plans start at $8/month (Starter, 1,000 tokens). Pro is $19/month and comes with 5,700 tokens, which roll over if you don't use them. Extra tokens are $5 for 3,000.
Token cost depends on the model and on how long the conversation is, since the whole thread gets sent back each time. These are rough per-message numbers for a normal back-and-forth (a couple of pages of context going in, a few paragraphs coming out), based on each provider's published API rates. The app shows the exact count after every reply, so you'll know your real numbers within a day.
| Model | Rough tokens per message |
|---|---|
| Claude Haiku 5.5 | about 1 |
| Gemini 3.8 Flash | about 5 |
| Claude Sonnet 5.5 | about 13 |
| GPT-6.1 Sol | about 13 |
| Claude Opus 5.5 | about 26 |
| GPT-6 Astra | about 66 |
Reasoning-heavy answers cost more, because the model's thinking is billed as output. Long threads cost more too. Starting a fresh chat when the topic changes is the easiest way to keep costs down.
A worked month: the "both, but lightly" user
Say this is your month:
- 15 messages a day to Sonnet 5.5 or GPT-6.1 Sol for everyday stuff, 22 working days: 330 messages x 13 = 4,290 tokens
- 3 long writing sessions with Opus 5.5, about 15 messages each: 45 x 26 = 1,170 tokens
- A handful of quick lookups in Gemini 3.8 Flash, 40 messages x 5 = 200 tokens
That's 5,660 tokens, so it fits inside the Pro plan's 5,700. You'd be paying $19 instead of $40, and you'd also have Gemini, Grok, Perplexity and the image and video models on the same login.
A worked month: the heavy Claude user
Now say you live in Opus 5.5. Forty substantial messages a day, 22 days a month:
- 880 messages x 26 = 22,880 tokens, which is about $38 of usage.
At that volume Claude Pro's flat $20 is clearly cheaper, and I'd tell you to keep it. Tokens are a good deal when your usage is spread across models or is lumpy from month to month. They're a bad deal if you hammer one premium model all day. I'd rather say that plainly than have you find out on day nine when your balance runs dry.
When paying for both is the right call
Keep both subscriptions if two or more of these are true:
- You hit the limit on at least one of them most weeks.
- You use Claude Code or OpenAI's Codex daily. Those agentic coding tools are tied to the native subscriptions and burn through a lot of model time, which flat pricing absorbs nicely.
- You rely on app features: ChatGPT voice conversations in the car, custom GPTs your team built, Claude Projects with a big shared knowledge base.
- Your employer is paying.
If none of those apply, you're probably in the "drop one" camp.
When to drop one (and which one)
Drop the one you open less. That sounds glib, but it's the most reliable signal. Check your history in each app: count the days in the last month you used each one for more than a minute.
Then decide where the dropped model's work goes:
- Use the free tier. Both ChatGPT and Claude have free plans. If you only need the second model occasionally, the free tier might be enough.
- Pay per use. Put the second model behind tokens, either through the provider's API (fine if you're technical) or through an aggregator like LazySusan if you want a normal chat app.
- Move everything over. If you're dropping ChatGPT, you don't have to lose two years of chats. ChatGPT, Claude, Gemini and Grok all let you export your history as a ZIP, and LazySusan can import those exports into its chat history so your old threads stay searchable. I wrote up the steps in how to move your ChatGPT history to another AI.
What you give up with an aggregator
I'd be doing you a disservice if I didn't list this. When you use GPT or Claude through a third-party app, you get the models, not the apps around them. That means:
- No ChatGPT custom GPTs, no ChatGPT voice mode, no Claude Projects or Artifacts.
- No Claude Code or Codex. If you're a developer who lives in those, keep the native subscription.
- Tokens can run out. On a flat plan you hit a cooldown and wait a few hours. On tokens you top up or wait for next month.
- Premium models cost more tokens. GPT-6 Astra is roughly five times the cost of Sonnet 5.5 per message, so you start choosing models more deliberately. Honestly I think that's a good habit, but it's a change.
What you get in return is the ability to send the same prompt to several models and compare the answers, switch models mid-conversation when one gets stuck, and stop paying for two sets of headroom. If you want a feature-by-feature view, the LazySusan vs ChatGPT and LazySusan vs Claude pages lay it out.
My recommendation
If you're a heavy user of one model, keep that one subscription and use the free tier of the other.
If you're a heavy user of both and you use the native features, keep both and stop feeling guilty about it. $40 a month is cheap for something you use eight hours a day.
If you're a light-to-moderate user of both, which is most people, stop paying twice. One token-based plan covers both models and the rest of them, and you can see what each message cost. I went through the same audit when I cancelled most of my AI subscriptions and haven't regretted it.
FAQ
Is ChatGPT Plus or Claude Pro better value in 2026? They cost the same ($20/month). ChatGPT Plus is better value if you want one app for text, images, voice and files. Claude Pro is better value if your work is mostly writing, editing or long documents, and Anthropic's $17/month annual price makes it slightly cheaper.
Can I use ChatGPT and Claude with one subscription? Not from OpenAI or Anthropic directly. Third-party platforms like LazySusan give you both, plus Gemini, Grok and others, under one plan. You pay with tokens (600 tokens = $1 of usage) instead of getting a flat message allowance.
How many messages do I get on LazySusan's $19 plan? It depends on the model. With 5,700 tokens a month, that's roughly 430 normal messages to Claude Sonnet 5.5 or GPT-6.1 Sol, about 220 to Claude Opus 5.5, or about 85 to GPT-6 Astra. Mixing in cheaper models stretches it further.
Will I lose my ChatGPT history if I cancel Plus? No. Cancelling Plus drops you to the free plan and your chats stay in your account. You can also export everything from Settings, then Data controls, then Export data, and import that file elsewhere.
Is it worth paying for both if I code? If you use Claude Code or Codex every day, probably yes, because those tools are built around the native subscriptions. If you just paste code into a chat window now and then, one subscription or pay-per-use access is enough.