Grok 4 Launches: xAI's 200,000-GPU Bid for the Benchmark Crown, With a $300/mo Heavy Tier
xAI released Grok 4 in July 2025, setting records on GPQA and other hard benchmarks, plus a multi-agent Heavy edition.
xAI's assistant launched November 2023, known for real-time access to the X platform, now iterated to the Grok 4 series.
xAI released Grok 4 in July 2025, setting records on GPQA and other hard benchmarks, plus a multi-agent Heavy edition.
On March 28, 2025, Musk announced xAI's all-stock acquisition of X — valuing xAI at $80 billion and X at $33 billion — merging data and distribution.
ChatGPT
OpenAI's conversational assistant, launched November 30, 2022, which ignited the global generative AI wave — now powered by GPT-5 with agentic capabilities.
Claude
Anthropic's AI assistant, launched March 2023, known for long-context handling and coding — the current flagship is Claude Opus 4.5.
Gemini
Google's AI assistant, rebranded from Bard in February 2024, deeply integrated with Search and Workspace, now driven by Gemini 3.
Microsoft Copilot
Microsoft's unified AI assistant since November 2023, spanning Windows, Edge and Microsoft 365.