Real-time informationGrok wins
Grok reads X as it happens. For breaking news, markets and sentiment, ChatGPT’s browsing feels a step behind.
General capabilityChatGPT wins
The GPT-5.6 lineup plus GPT-6 Astra on top covers more tasks at higher polish than Grok 4.6’s single track.
Long agent runsTie
Grok 4.6’s 500K window was built for agents that run for hours; OpenAI answers with a million tokens and, in Astra, a model aimed at exactly this. Both are credible now.
PersonalityTie
Grok is funnier and blunter; ChatGPT is steadier and safer. This one is genuinely taste.
EcosystemChatGPT wins
Apps, integrations, enterprise - ChatGPT is a platform; Grok is a feature of X (a good one).
PriceChatGPT wins
ChatGPT Plus at $20 undercuts Premium+ at around $40 for full Grok, and the free tier is far stronger since August 2026.
On paper