This article provides a timely comparison of five leading LLM platforms—Flash, DeepSeek, MiniMax, Gemini, and GPT—for building AI agents. It evaluates each platform on key criteria including reasoning capability, cost per token, API design and developer experience, ecosystem integration, and support for agent-specific features like tool use and memory. The analysis highlights that while GPT and Gemini offer strong ecosystems, newer platforms like DeepSeek and MiniMax are competitive on cost and reasoning for specific use cases. Flash is noted for its speed and simplicity. This comparison is essential reading for developers and tech leads evaluating which LLM backend to use for their agent-based applications, as the choice significantly impacts performance, cost, and development velocity.
A comparison of five major LLM platforms for agent development, evaluating reasoning, cost, API design, and ecosystem.