xAI has launched Grok 4.5, positioning it as a more affordable alternative to models like GPT-4o and Claude, with pricing at half the cost. While Grok 4.5 demonstrates significant token efficiency, achieving approximately 4.2x fewer tokens than Opus 4.8 for certain tasks, it falls behind competitors such as Fable 5 and GPT-5.5 in coding benchmarks like SWE Bench Pro. The model was trained using substantial computational resources, including "tens of thousands of GB300s", and is noted for its closed weights and initial unavailability in the EU. AI
IMPACT Grok 4.5's aggressive pricing and token efficiency could shift market dynamics, pressuring competitors on cost while its performance in coding benchmarks remains a key area for development.
RANK_REASON Frontier-lab model release with system card and benchmark data.
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