Jev Router evaluated on Agent Arena shows strong steerability but higher latency

DeepSeek: DeepSeek develops advanced large language models, including the V4.1 Flash series optimized for speed and cost-effectiveness in real-world applications. These models frequently appeared in routing decisions as Pareto-efficient choices during the Jev Router tests on Agent Arena. The evaluation highlighted their strong baseline performance in success rates and recovery metrics compared to routed alternatives. GPT-6 Luna: GPT-6 Luna is an OpenAI GPT-6 series model variant evaluated for its utility in routed LLM workflows. Jev Router selected it frequently as one of its top choices, contributing to the system's overall efficiency profile. Its inclusion highlighted the router's tendency to favor OpenAI models in the tested sessions. Jev Router: Jev Router is an AI model routing system developed by typesafeai and evaluated on the Agent Arena platform for agentic tasks. It analyzes performance across multiple LLMs to direct queries based on criteria like efficiency and user input. In this evaluation, it demonstrated strong steerability by adjusting model selection in response to feedback while frequently choosing efficient options like DeepSeek variants. Claude Opus: Claude Opus refers to Anthropic's high-performance Claude Opus model family, with versions like Opus 5.5 noted for advanced capabilities in complex reasoning and user alignment. It served as a benchmark in the Jev Router assessment, particularly for steerability scores where Jev nearly matched its performance. The comparison underscored routing systems' potential to approach specialized model strengths without direct calls. GPT-6 Astra: GPT-6 Astra is a variant within OpenAI's GPT-6 family that Jev Router selected as its second-most common choice during testing. It contributed to the router's demonstrated preference for OpenAI models in agentic sessions on Agent Arena. The model helped illustrate the router's smart prioritization among frontier-efficient options. GPT-6.1 Sol: GPT-6.1 Sol is a variant in OpenAI's GPT-6 model lineup, designed for specialized performance in agentic and conversational tasks. It ranked among the top models selected by Jev Router for its balance of capabilities during the Agent Arena evaluations. The router showed notable preference for this and related GPT variants over other providers. DeepSeek V4.1 Flash: DeepSeek V4.1 Flash is a core model in DeepSeek's lineup, recognized for strong Pareto-frontier performance in cost and latency during agent evaluations. It was the most frequently routed model by Jev Router, accounting for the largest share of selections in the Agent Arena tests. Direct use of this model often achieved comparable results to the router at reduced overhead. DeepSeek V4.1 Flash (Max): DeepSeek V4.1 Flash (Max) is an enhanced configuration of the V4.1 Flash model, serving as a high-performance reference point in routing comparisons. Jev Router was benchmarked against it for overall trade-offs in speed and cost on the Agent Arena leaderboard simulation. It outperformed the router on several core metrics like confirmed success rates. Steerability Benefits: Strong steerability enables routers to effectively adjust LLM selections in response to user corrections and feedback during agentic workflows. Model Routing Challenges: Balancing task success, steerability, cost, and latency simultaneously remains an open challenge in LLM routing systems. Pareto Frontier Evaluation: Many routing decisions prioritize models already positioned on the efficiency frontier for performance versus resource use in real-world agent tests.