xAI Launches Grok 4.3 with Lower Prices and Improved Agent Benchmarks

Grok 4.3 scores 53 on the Artificial Analysis Intelligence Index with meaningfully lower API costs, positioning xAI as a cost-competitive option for agentic workloads.

xAI released Grok 4.3 via API on Wednesday, with @techdevnotes noting the launch and @ArtificialAnlys providing the benchmark context: the model scores 53 on the Artificial Analysis Intelligence Index, with "improved agentic performance" and notably lower pricing.

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