xAI Launches Grok 4.3 on API: Tops Agentic Tool Calling Benchmarks
Original: xAI Launches Grok 4.3 on API: Tops Agentic Tool Calling Benchmarks View original →
Grok 4.3 Now Available on xAI API
xAI has officially released Grok 4.3 on its API, positioning it as the company's fastest and most intelligent model to date. The launch targets developers building agentic AI applications that require strong instruction-following and tool use capabilities.
Benchmark Performance
According to xAI, Grok 4.3 tops the ArtificialAnalysis leaderboards in both agentic tool calling and instruction following. In enterprise domain evaluations by Vals AI, the model ranks #1 in case law and corporate finance — domains that demand precision and domain-specific accuracy.
Specifications
- Context window: 1 million tokens
- Pricing: $1.25/M input tokens, $2.50/M output tokens
Competitive Landscape
The Grok 4.3 release arrives at a time of intense competition in the agentic AI space, directly competing with OpenAI and Anthropic's latest models. Its 1M token context window makes it well-suited for processing long documents and handling complex multi-step enterprise workflows.
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