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GPT-5
by OpenAI
OpenAI's flagship frontier model, combining strong reasoning with broad general-purpose capability.
5/5
Visit GPT-5 - Context window
- 400K tokens
- Open weights
- No
- Released
- Aug 2025
Pros
- + Top-tier reasoning and coding performance
- + Large context window
- + Adaptive thinking depth per query
Cons
- − Closed weights, API-only
- − Premium pricing for heaviest use
- − Reasoning modes add latency
What Is GPT-5
GPT-5 is OpenAI’s flagship large language model. It unifies the company’s earlier split between fast chat models and dedicated reasoning models into a single system that adjusts how hard it thinks based on the task.
In Practice
GPT-5 powers ChatGPT and the OpenAI API across coding, analysis, writing, and agentic workflows. It sets a high bar on reasoning benchmarks and is a default choice for teams that want frontier capability without managing model selection themselves.