4 models
Ranked by MCP Atlas
Reasoning Tools JSON 83.6

Fast Gemini model balancing multimodal reasoning, tool use, and cost

google/gemini-3.5-flash 2026-05-19 1.04858M context $1.5/M input $9/M output
31 providers
Reasoning Tools JSON 75.3

Default frontier GPT for coding, computer use, research, and knowledge work

openai/gpt-5.5 2026-04-23 1.05M context $5/M input $30/M output
46 providers
Reasoning Tools JSON 57.7

Strong small GPT for coding subagents, quick tool use, and high-volume work

openai/gpt-5.4-mini 2026-03-17 400K context $0.75/M input $4.5/M output
31 providers
Reasoning Tools JSON 56.1

Cheapest GPT-5.4 lane for simple routing, extraction, and bulk automation

openai/gpt-5.4-nano 2026-03-17 400K context $0.2/M input $1.25/M output
27 providers