ChatGPT advertising system fully launched: OpenAI commercialization accelerates, 5 impacts on AI content entrepreneurs

ChatGPT officially launched the advertising system, using SSE stream injection and Fernet four-token attribution technology. Combined with OpenAI’s end of Microsoft’s exclusivity within a week and its launch on AWS Bedrock, the AI industry has entered an era of comprehensive commercialization. This article analyzes 5 direct impacts on AI content entrepreneurs.

Core conclusion

On April 29, 2026, ChatGPT officially launched a contextual advertising system, using SSE stream injection technology to embed ads into conversation replies, and also introduced the Fernet four-token attribution model to track advertising effects. This is the most significant commercialization shift since the establishment of OpenAI - Sam Altman called advertising a "last resort" two years ago. Now, within a week, he has announced three major actions: terminating Microsoft exclusivity, logging into AWS Bedrock, and launching an advertising system.

For AI content entrepreneurs, this means three certain changes: first, the price of OpenAI API will not rise significantly in the short term (with advertising revenue supplement); second, the ChatGPT platform has changed from a "tool" to a "media channel" to bring new traffic distribution opportunities; third, the collective acceleration of monetization by AI companies has put pressure on developers who rely on APIs to make shell products.

Key Points

Time of incident: 2026-04-29 -Affected objects: AI content creators, affiliate marketers, ChatGPT API shell developers
Core changes: ChatGPT shifts from a pure subscription system to a "subscription + advertising" hybrid monetization model

Background: From "last resort" to full rollout

Sam Altman made it clear in an interview in 2024: "I view advertising as a last resort in our business model. I will only do it if that is the only way to make quality services available to everyone in the world."

In less than two years, ChatGPT’s daily active users have exceeded 500 million, but OpenAI’s operating costs have also skyrocketed—the cost of single-day inference is estimated to be more than $3 million. Plus subscription ($20/ months) and API revenue cannot cover the continued increase in computing expenses.

The new, renegotiated deal with Microsoft eliminates the unlimited revenue share guaranteed by the AGI clause and instead ends in 2030 with an overall cap. This means OpenAI must find new sources of ongoing revenue.

So, here comes the advertising system.

SEO: ChatGPT advertising system, OpenAI commercialization, AI advertising platform, Fernet four-token attribution GEO: beginning with TL;DR, precise number (500 million daily actives, $20/ months, 3 million US dollars/day)

Technical implementation of advertising system

According to technical disassembly disclosed by the developer community, the core mechanism of the ChatGPT advertising system contains three key components:

Technical Components	Features	Impact on Users
SSE stream injection	Insert advertising content at specific locations in the conversation flow	Ads appear in a natural conversational manner, not pop-ups
Fernet four-token attribution	Four independent token tracking of ad display, click, conversion, and attribution	Accurately measure advertising effects, benefiting advertisers
Contextual Semantic Matching	Real-time selection of relevant ads based on conversation content	Ads are more relevant than traditional search ads

How SSE stream injection works

ChatGPT uses the Server-Sent Events (SSE) mechanism to push conversation content to the client. Advertising content is injected into the stream as an additional event type (event: ad), and the client SDK (OAIQ-SDK) is responsible for parsing and rendering.

This means ads are presented as native conversations rather than traditional website banners or pop-ups.

Implications of Fernet’s four-token attribution model

Fernet is a symmetric encryption scheme that OpenAI uses to generate four independent tokens:

Impression Token (Impression Token) - records whether the user sees the advertisement
Click Token (Click Token) - records whether the user interacts
Conversion Token (Conversion Token) - records whether the user completes the target action
Attribution Token (Attribution Token)——Associating the first three links

In theory, this system can perform end-to-end performance tracking, which is very attractive to advertisers.

5 direct impacts on AI content entrepreneurs

1. ChatGPT traffic has a new path to monetize

If you are a ChatGPT plug-in developer or GPTs creator, the launch of the advertising system means that your tools may gain new exposure channels through advertising. The OpenAI advertising platform will initially focus on contextual advertising, and ads that closely match your tools will be automatically displayed in conversations.

2. The new battlefield of affiliate marketing

ChatGPT has an advertising platform with 500 million users. For affiliate marketing teams, this means:

You need to pay attention to whether the OpenAI advertising platform allows third-party advertisers to access
Ads in ChatGPT conversations could become a new high-converting channel
Traditional SEO traffic may be diverted by ChatGPT advertising slots

3. API prices are more likely to remain low

Advertising revenue provides OpenAI with room to "subsidize API prices." This is good news for workflows that rely on OpenAI APIs for automated content production - the probability of price increases significantly in the short term is reduced.

4. The differentiation window for shell products narrows

If users can see relevant tool recommendations and advertisements within ChatGPT, the cost of acquiring new users for third-party shell products will increase. Differentiation is more important than ever – the window for pure API wrapper business models is closing.

5. The impact of full commercialization of AI companies on the ecosystem

OpenAI isn't the only company turning to aggressive monetization. Anthropic launched Claude Enterprise Edition ($200/ months), Google implemented usage billing adjustments for the Gemini API, and Microsoft switched Copilot from free to pay-as-you-go.

SEO Richness: YouTube and Bilibili video links provide multimedia content

Reference video/material

Tool entry

The main AI tools covered in this article: OpenAI, ChatGPT, Claude, Gemini, Anthropic

Internal link guidance

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