Claude Sonnet 5.5 vs GPT-6.1 Sol
A plain comparison: what they do, what they cost and which to pick for your task.
In short
Both are everyday models at the same price. Claude Sonnet writes more natural text and is stronger in code and long documents; GPT-6.1 Sol is better at quick answers, maths and homework.
Claude Sonnet 5.5 and GPT-6.1 Sol cost about the same per answer.
Side by side
| Claude Sonnet 5.5 | GPT-6.1 Sol | |
|---|---|---|
| Maker | Anthropic, USA | OpenAI, USA |
| Type | everyday | everyday |
| Good for | Claude’s everyday model. Natural writing and good code, the best value of the line. | ChatGPT’s everyday model. Answers any question, writes text and code. |
| Official, $ per 1M | $2 / $10 | $2 / $10 |
| Freepay rate | ×1 / ×5 | ×1 / ×5 |
| Maker’s subscription | Claude Pro costs about $20 a month. | ChatGPT Plus costs $20 a month. |
Prices: your text / answer. The “Freepay rate” shows how many balance tokens a model spends per token of its own; Claude Sonnet 5.5 is ×1.
Which to pick for the task
| Task | Better |
|---|---|
| Posts, articles, emails | Claude Sonnet 5.5 |
| Code | Claude Sonnet 5.5 |
| Questions and study | GPT-6.1 Sol |
| Maths and calculations | GPT-6.1 Sol |
| Long documents | Claude Sonnet 5.5 |
The best way to choose is to ask both models the same question. On Freepay you do it in one chat, switching the model in the input field.
About Claude Sonnet 5.5
Claude’s everyday model. Natural writing and good code, the best value of the line. Claude is made by Anthropic, a US company. People pick it for natural writing, strong code and the way it handles long documents. More about Claude Sonnet 5.5.
About GPT-6.1 Sol
ChatGPT’s everyday model. Answers any question, writes text and code. GPT models are made by OpenAI and power ChatGPT, the best-known AI chat. It answers any question, does maths, explains and helps with study. More about GPT-6.1 Sol.
Frequently asked questions
Which is better, Claude Sonnet 5.5 or GPT-6.1 Sol?
Both are everyday models at the same price. Claude Sonnet writes more natural text and is stronger in code and long documents; GPT-6.1 Sol is better at quick answers, maths and homework.
Which is cheaper, Claude Sonnet 5.5 or GPT-6.1 Sol?
Claude Sonnet 5.5 and GPT-6.1 Sol cost about the same per answer. Official prices per 1M tokens: Claude Sonnet 5.5 $2 / $10, GPT-6.1 Sol $2 / $10. On Freepay both are 10x cheaper.
Can I use Claude Sonnet 5.5 and GPT-6.1 Sol in one place?
Yes. On Freepay both models are in one chat, you switch them in the input field, and the balance is shared.
Do I need two subscriptions for Claude Sonnet 5.5 and GPT-6.1 Sol?
No. On claude.ai you need an account and a phone number, the free plan has tight message limits, and Claude Pro is a monthly subscription. ChatGPT needs an account, the free plan limits the best models, and ChatGPT Plus is a monthly subscription. On Freepay one key covers both, with no subscription.