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

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

openai/gpt-5.5 2026-04-23 1.05M context $5/M input $30/M output
50 providers
Reasoning Tools JSON 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
44 providers
Reasoning Tools JSON Open weights 73.2

Strong GLM coding model for agentic engineering, terminals, and repository generation

zhipuai/glm-5.1 2026-04-07 200K context $0.896/M input $3.585/M output
47 providers
Reasoning Tools JSON 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
49 providers
Reasoning Tools JSON Open weights 67.8

DeepSeek V4 Pro is a large-scale Mixture-of-Experts model from DeepSeek with 1.6T total parameters and 49B activated parameters, supporting a 1M-token context window. It is designed for advanced reasoning, coding,...

deepseek/deepseek-v4-pro 2026-04-24 1.024M context $0.209/M input $0.418/M output
71 providers
Reasoning Tools JSON Open weights 59.8

Kimi K2.6 is Moonshot AI's next-generation multimodal model, designed for long-horizon coding, coding-driven UI/UX generation, and multi-agent orchestration. It handles complex end-to-end coding tasks across Python, Rust, and Go, and...

moonshotai/kimi-k2.6 2026-04-20 262.144K context $0.65/M input $3.41/M output
69 providers
Reasoning Tools JSON 45.6

Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...

google/gemini-3.1-pro-preview 2026-02-19 1.04858M context $2/M input $12/M output
37 providers