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.
AI Tools Daily · aitoolsdaily.site
xAI's assistant launched November 2023, known for real-time access to the X platform; the latest Grok 4.6 shipped in August 2026.
Reported event dates: Mar 28, 2025–Jul 9, 2025 · 2 stories
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, available through ChatGPT services. The cited status page supports the stated service scope; current model access and plan entitlements require separate product documentation.
Claude
Anthropic's AI assistant, launched March 2023, known for long-context handling and coding — the current flagship is Claude Fable 5.1.
Gemini
Google's AI assistant, rebranded from Bard in February 2024, deeply integrated with Search and Workspace, now driven by Gemini 3.8.
Microsoft Copilot
Microsoft's unified AI assistant since November 2023, spanning Windows, Edge and Microsoft 365.