2 models
Ranked by Intelligence Index
Reasoning Tools JSON 28.2

Upstage's flagship model, specialized for agentic use

upstage/solar-pro4 2026-08-06 524.288K context $0.3/M input $1.2/M output
6 providers
Reasoning Tools JSON 10.4

Lean Gemini 2.5 lane for cheap multimodal traffic and quick agents

google/gemini-2.5-flash-lite 2025-06-17 1.04858M context $0.1/M input $0.4/M output
19 providers