2 models
Ranked by Artificial Analysis Coding Agent Index
Reasoning Tools JSON 74.6

Cost-efficient GPT-5.6 model for fast, high-volume workloads

openai/gpt-5.6-luna 2026-07-09 1.05M context $0.2/M input $1.2/M output
36 providers
Reasoning Tools JSON Open weights 50.5

Multimodal Kimi workhorse for agent loops, coding tasks, and visual context

moonshotai/kimi-k2.6 2026-04-21 262.144K context $0.95/M input $4/M output
64 providers