8 models
Ranked by SWE-Atlas Codebase QnA
Reasoning Tools JSON 79.1

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 78.4

Stronger Opus tier for advanced software work and high-stakes reasoning

anthropic/claude-opus-4-7 2026-04-16 1M context $5/M input $25/M output
40 providers
Reasoning Tools JSON 72.9

Agent-ready GPT for coding and computer-use workflows at a lower cost

openai/gpt-5.4 2026-03-05 1.05M context $2.5/M input $15/M output
42 providers
Reasoning Tools 71.9

High-end Claude for difficult coding, planning, and slower expert reasoning

anthropic/claude-opus-4-6 2026-02-05 1M context $5/M input $25/M output
37 providers
Reasoning Tools 70.3

Claude workhorse for coding agents, careful analysis, and production cost control

anthropic/claude-sonnet-4-6 2026-02-17 1M context $3/M input $15/M output
45 providers
Reasoning Tools JSON 45.6

Reasoning-first Gemini preview for agentic coding and complex problem solving

google/gemini-3.1-pro-preview 2026-02-19 1.04858M context $2/M input $12/M output
31 providers
Reasoning Tools JSON 32.6

Coding-optimized GPT model for repository edits, reviews, and agentic software work

openai/gpt-5.3-codex 2026-02-05 400K context $1.75/M input $14/M output
28 providers
Reasoning Tools JSON 8.2

New Gemini flash lane bringing frontier-style multimodal reasoning to cheaper runs

google/gemini-3-flash-preview 2025-12-17 1.04858M context $0.5/M input $3/M output
25 providers