ChatGPT
General-purpose LLMs are not rated as companion apps. See methodology.
The most-used AI companion in the world, even though it isn't marketed as one. Persistent memory, custom instructions, and best-in-class voice mode make it the default 'partner in your pocket' for a huge share of the AI-relationship population. The catch is that your companion lives at the mercy of model updates: when OpenAI retires or retunes a model, the personality you knew can change overnight.
ChatGPT key facts
| Price | Free / $20/mo (Plus) |
|---|---|
| Pricing model | Freemium |
| Platforms | Web, iOS, Android |
| Adult content | Not the focus / restricted |
| Official site | chatgpt.com/ |
Facts current as of . Spotted something stale? The change timeline below records every correction.
Memory benchmark
Not yet benchmarked. We run every companion through the same published memory test: the same facts planted at increasing distance, then probed. No score appears here until a real run exists, and every score links to its raw data. How the benchmark works.
ChatGPT pricing
Current price: Free / $20/mo (Plus) (Freemium). Prices in this category change quietly and often; any price change we record appears as a dated entry in the timeline below, so this page doubles as ChatGPT's price history.
ChatGPT change timeline
Every recorded price, model, policy, and feature change, newest first. This is the record we maintain for every companion: what you sign up for today is rarely what the app was a year ago.
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model being verified
GPT-4o retired with GPT-5 rollout; companion personalities change overnight
OpenAI's GPT-5 rollout replaced GPT-4o as the default model. Users with long-running companion relationships on 4o widely reported the new model felt colder, prompting a documented grief wave and, after backlash, a partial restoration of 4o access for paid users.
ChatGPT alternatives
Frequently asked questions
Can you use ChatGPT as an AI companion?
Yes, and more people do than use any purpose-built companion app. Custom instructions, memory, and voice mode make it a capable daily companion. The trade-offs: it is not designed for the role, its personality shifts when the underlying model changes, and romantic content policies are stricter than companion apps.