Grok 4.5 Storms the AI Frontier — Then Torches Prices

Grok 4.5's record leap lands it 4th on the intelligence index, then its $2/$6 pricing undercuts Opus-class rivals ~60%.

The top 3

1. The 3 smartest AIs right now: Claude Fable 5 tops the Artificial Analysis Intelligence Index at ~60 — the highest score ever — and even Grok 4.5's leap only reached 4th at 54.
2. Cheapest frontier AI, ranked: Grok 4.5's $2/$6 pricing undercuts Opus-class rivals ~60%, GLM-5.2 is the cheapest true frontier tier, and DeepSeek-V3 is cheaper still.
3. The most valuable AI labs: Anthropic is the most valuable private AI startup at ~$965B, ahead of OpenAI's ~$852B, while the SpaceX+xAI combo is the biggest merger ever at ~$1.25T.

Sources

• Artificial Analysis: Grok 4.5 model page
• AI Weekly: Grok 4.5 places fourth on AA index

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