Artificial intelligence · 2025

GPT-5

OpenAI merges fast answers and deep reasoning behind one router.

Released August 7, 2025, GPT-5 routed between a fast model and a thinking model automatically and became ChatGPT's default for its roughly 700 million weekly users. It reported 74.9% on SWE-bench Verified and reduced hallucination rates.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

o3 and ARC-AGI 2024
GPT-4o 2024

What it led to 4

AI sweeps ICPC World Finals 2025
GPT-5.2 2025
Autonomous AI researchers ~2029
Artificial general intelligence ~2032

Watch

Introducing GPT-5OpenAI · YouTube

Related measurements

The dashed line marks when it first worked.

Best AI score on GPQA Diamond Latest: 95.8 % correct (2026) Source: Epoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv); Anthropic: Claude 3 public launch (March 4, 2024)

Training compute of notable AI models Source: Epoch AI, Notable AI Models (CC BY 4.0)