Meta's latest AI model, Maverick, was recently ranked second on LM Arena, a performance test, but discrepancies have emerged between this version and the one available to developers. Researchers have highlighted that the LM Arena variant is an ‘experimental chat version’ optimized for conversational use, raising questions about the reliability of the benchmark. Critics argue that tailoring models for specific benchmarks creates confusion for developers regarding real-world performance. Observers noted significant behavioral differences, such as excessive emoji use and verbose responses, between the two versions. Meta has been contacted for further clarification.