
MiniMax-M2.5 is a step upgrade in the “agentic” / coding-first family of LLMs that landed in early 2026. It pushes both capability and throughput (notably better function-calling and multi-turn tool use), while the vendor advertises very aggressive cost figures for hosted usage. Still, teams that run high volume agent workloads can often reduce spend dramatically by combining (1) smarter prompt + architecture choices, (2) hybrid hosting or local inference for portions of the workload, and (3) switching some traffic to cheaper / aggregated API providers or open tooling such as OpenCode and CometAPI.

Qwen 3.5 targets large-scale, low-cost agentic multimodal workloads with a sparse Mixture-of-Experts (MoE) design and massive activated capacity; Minimax M2.5 emphasizes cost-efficient, realtime agent throughput at low running costs; GLM-5 focuses on heavy reasoning, long-context agents and engineering workflows via a very large MoE-style architecture optimized for token efficiency. The “best” depends on whether you prioritize raw reasoning/coding quality, agent throughput and cost, or open-source flexibility and long-context engineering workflows.

MiniMax-M2.5 is a new, productivity-focused large language model from MiniMax that’s optimized for coding, agentic tool use, and office workflows. You can call it through its native MiniMax platform or through API aggregators such as CometAPI. You only need to obtain the CometAPI API key to use the API, as Minimax-M2.5 also supports the chat format.

A comprehensively upgraded general-purpose model called MiniMax M2.5, announced by MiniMax and positioned as a model built specifically for agentic workflows, code generation, and “real-world productivity.” The company describes M2.5 as the result of extensive reinforcement-learning training in hundreds of thousands of complex environments, delivering major gains in coding benchmarks, tool use, and long-context reasoning while pushing inference efficiency and cost effectiveness.