Review of GPT-5.4
GPT-5.4 is OpenAI's frontier model, released in March 2026, bringing together OpenAI's latest advances in reasoning, coding and agentic workflows into a single product. With a 1M-token context, native computer-use capabilities and improved efficiency, GPT-5.4 powers ChatGPT (Thinking, Pro) and the OpenAI API. The model is 33% less likely to make false claims and 18% less likely to include errors than GPT-5.2, while using fewer tokens.
GPT-5.4: Le modèle OpenAI ultime: raisonnement, code et computer-use
Best for
- Developers building coding agents
- Advanced product and data teams
- Startups embedding AI agents
- Pros demanding strong reasoning
- Researchers and analytical consultants
Not ideal for
- Trivial use cases with no AI value
- Tight budgets without API plan
- Use cases covered by specialized models
- Strict offline or sovereign deployments
Pros & cons
- ✅ Extended 1M-token context window
- ✅ Native computer-use capabilities
- ✅ Best-in-class for code and agents
- ✅ 33% fewer false claims vs GPT-5.2
- ✅ Variants: Thinking, Pro, mini, nano
- ✅ Coherent API and ChatGPT integration
- ⚠️ GPT-5.4 Pro limited to premium subscribers
- ⚠️ API costs can be significant at scale
- ⚠️ Variable latency in Thinking mode
- ⚠️ Strict usage policies on some cases
- ⚠️ Gradual regional rollout
Our verdict
GPT-5.4 confirms OpenAI's trajectory toward a more efficient, more accurate and more agent-friendly model. The blend of a 1M-token context, native computer-use and a notable reduction in errors makes it a key asset for developers, product teams and startups embedding deep reasoning into their products. Thinking, Pro, mini and nano variants let users calibrate the model to use case and budget. Main downsides include Pro being limited to premium subscribers, API costs at high volume and usage policies. For organizations working intensively with AI, GPT-5.4 is currently a strong reference to integrate without hesitation into the daily stack across teams handling reasoning-heavy workloads.
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FAQ
What's the difference between GPT-5.4 and GPT-5.4 Pro?
GPT-5.4 Pro is built for the most complex tasks with more compute and reasoning. GPT-5.4 Thinking is available in ChatGPT and the API.
Is GPT-5.4 available to free users?
Yes, GPT-5.4 mini is available to free users since March 2026, while GPT-5.4 nano is API-only.
What is the maximum context length?
GPT-5.4 supports up to 1M tokens, allowing agents to plan and verify across long sessions.
Can GPT-5.4 control a computer?
Yes, GPT-5.4 is OpenAI's first general-purpose model with native computer-use capabilities for complex workflows.
How do I access GPT-5.4?
The model is available in ChatGPT (Plus, Pro, Team, Enterprise) depending on plan, and via the OpenAI API for developers.