OpenAI Opens Free Chat Without Limits, While DeepSeek Raises Its API Prices

On August 6, 2026, two of the world's largest AI labs moved in opposite directions on the same day. OpenAI announced that ChatGPT's free tier would offer unlimited text messages to users, with a new "Think" button for harder questions. Hours earlier, DeepSeek posted a notice saying it would soon raise API prices "by a large amount," without giving exact numbers or a clear date.

OpenAI's move looks like a defense of its user base. The free tier no longer caps how many messages a person can send in a day, and the default model on free is now GPT-5.6 Luna. Image, file, and voice tools still have limits. Analysts read this as OpenAI trying to lock in user habits before rivals can grow, and to gather more real conversation data to feed future models.

DeepSeek's move looks like a recovery of cost. The lab said its V4 Flash model now handles trillions of tokens per week, and a single day of traffic recently pushed its servers close to capacity. With GPU supply tight, the company is signaling that very low prices may not last. Developers who built products on the cheap API now have to plan for a higher monthly bill.

Taken together, the two announcements show the AI market is changing. The era of "burn money to win users" is giving way to a search for sustainable revenue. Free chat looks like the new search engine, while paid API access is becoming the new cloud. For builders, the lesson is simple: pick a model on price and stability, not only on raw ability, because the cost line is moving up.