Xai Launches Grok 4 3 With Improved Agentic Performance And Lower Pricing
Source
artificialanalysis.ai
Author
Artificial Analysis articles
Date
Why it matters
Grok 4.3 cuts input price about 40% and output about 60% while improving agentic scores, lowering the cost to run the index about 20%.
Key takeaways · AI-distilled
Grok 4.3 costs $395 to run the Artificial Analysis Intelligence Index, about 20% less than Grok 4.20 0309 v2, even though it uses about 44% more output tokenThe chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.Full definition →; token prices 37.5% lower for input and 58.3% lower for output drive the saving.
On GDPval-AA, Grok 4.3 reaches an Elo of 1500 but still trails GPT-5.5 (xhigh) by 276 points, an expected win rate of about 17% under the standard Elo formula.
Grok 4.3 gains 5 points on τ²-Bench Telecom to 98% and holds 81% on IFBench, pointing to strength in instruction following and customer support AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → tasks.
Its AA-Omniscience accuracy rose 8 points while its non-hallucinationWhen a model states something false with full confidence — inventing facts, citations, or APIs that don't exist.Full definition → rate fell 8 points, so the earlier Grok 4.20 0309 v2 still leads Artificial Analysis's non-hallucination measure.
Terms in this piece · Glossary
token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
hallucination — When a model states something false with full confidence — inventing facts, citations, or APIs that don't exist.
