--- title: "OpenAI Quietly Tests GPT-5 Agent Features in ChatGPT Alpha Models" date: 2025-09-25 author: "Barry Elad" featured_image: "https://sqmagazine.co.uk/wp-content/uploads/2025/09/openai-quietly-tests-gpt-5-agent.jpg" categories: - name: "Artificial Intelligence" url: "/artificial-intelligence.md" tags: - name: "News" url: "/tag/news.md" --- # OpenAI Quietly Tests GPT-5 Agent Features in ChatGPT Alpha Models A surprise appearance of mysterious “Alpha Models” in ChatGPT has revealed OpenAI is quietly testing powerful new AI agent capabilities powered by GPT-5. ## Quick Summary – TLDR: - Users briefly spotted new “Agent” modes in ChatGPT labeled under Alpha Models. - These agents activate tool usage automatically, including web browsing and code execution. - Leaked prompts suggest OpenAI is testing a GPT-5-based agent called “GPT-Alpha”. - The feature disappeared quickly, hinting at internal testing before a full rollout. ## What Happened? Earlier this week, some ChatGPT users noticed a new section titled **“Alpha Models”** in the model selector, briefly listing experimental agents like **“Agent with Truncation”** and **“Agent with Prompt Expansion.”** These unannounced agents enabled [ChatGPT](https://sqmagazine.co.uk/chatgpt-statistics/) to automatically use tools such as the browser and code interpreter. One of the agents, based on its internal system prompt, was revealed to use **GPT-5** and carried the internal name **“GPT-Alpha.”** Although the features were removed shortly after they appeared, their brief availability has sparked excitement about what’s next for OpenAI’s most advanced models. > BREAKING 🚨: OpenAI is testing new Agent upgrades for ChatGPT as “Agent with truncation” started appearing in the list of Alpha models. > > Mistake rollout 👀 [pic.twitter.com/Ko4uC4JIOn](https://t.co/Ko4uC4JIOn) > > — TestingCatalog News 🗞 (@testingcatalog) [September 24, 2025](https://twitter.com/testingcatalog/status/1970899269105438957?ref_src=twsrc%5Etfw) ## Early Glimpse of GPT-5 Power The system prompt for GPT-Alpha outlined the agent’s wide range of autonomous capabilities: - **Browse the web** for live or niche data. - **Generate and edit images**. - **Write, run, and debug code**. - **Create or edit documents, spreadsheets, and slides**. The agent also includes important **constraints**, such as not accessing private information unless explicitly provided. These rules suggest [OpenAI](https://sqmagazine.co.uk/openai-vs-anthropic-statistics/) is already thinking through safe deployment as it moves toward more powerful and autonomous AI. The mention of **GPT-5 for Advanced Reasoning and Tool Use** gives weight to speculation that OpenAI is internally trialing its next-gen model ahead of a public release. ## Why It Matters for ChatGPT Users? This leak aligns with **recent hints from OpenAI CEO Sam Altman**, who has teased big feature announcements coming soon. While OpenAI has not issued an official comment on the agent test, these appearances suggest the company is close to launching more **tool-augmented** capabilities within ChatGPT. > Over the next few weeks, we are launching some new compute-intensive offerings. Because of the associated costs, some features will initially only be available to Pro subscribers, and some new products will have additional fees. > > Our intention remains to drive the cost of… > > — Sam Altman (@sama) [September 21, 2025](https://twitter.com/sama/status/1969835407421374910?ref_src=twsrc%5Etfw) According to reports, the Alpha Models surfaced due to a backend toggle and were not controlled from the user interface. The sudden removal suggests the release was **accidental**, possibly from internal testing that was mistakenly made public. If released, these agents could redefine how ChatGPT handles complex tasks like research or content creation by shifting from user-guided to **autonomously executed workflows**. ## Designed for Power Users and Premium Plans Given the tool-heavy nature of GPT-Alpha, it seems tailored for **power users, developers, and researchers**. Sam Altman has previously mentioned that new advanced capabilities may only roll out to **paid subscribers** due to high compute requirements. That could mean GPT-Alpha, when ready, becomes part of ChatGPT Plus or a new premium tier. There’s also growing competitive pressure from rivals like **[Perplexity’s](https://sqmagazine.co.uk/perplexity-ai-statistics/) Comet and [Microsoft’s](https://sqmagazine.co.uk/microsoft-statistics/) Copilot**, which makes OpenAI’s agent push even more strategic. ## SQ Magazine’s Takeaway I find this leak especially exciting because it shows how close we are to seeing **truly autonomous agents inside ChatGPT**. The fact that these agents can browse, code, and edit images all in one go is a big deal. It’s not just another model update. It’s the foundation of something that could totally change how we use AI in our day-to-day work. Whether you’re a developer, a content creator, or someone who just wants better productivity tools, this could be the next big leap.