5 models
Ranked by SWE-Bench Multilingual
Reasoning Tools Open weights 78.3

Sparse mixture-of-experts reasoning model with 23B active parameters for coding and agentic workflows

reflection/beam-1.0-501b-a23b 2026-10-05 1.04858M context $0.24/M input $0.98/M output
9 providers
Reasoning Tools Open weights 77.3

Meituan LongCat-2.0, a reasoning model with tool calling and a 1M-token context window

meituan/longcat-2.0 2026-06-30 1M context $0.3/M input $1.2/M output
6 providers
Reasoning Tools JSON Open weights 76.2

Open MoE flagship with million-token context for coding and long agent runs

deepseek/deepseek-v4-pro 2026-04-24 1M context $0.66/M input $1.98/M output
71 providers
Reasoning Tools JSON Open weights 73.3

Fast DeepSeek V4 lane for economical reasoning, coding, and long-context work

deepseek/deepseek-v4-flash 2026-04-24 1M context $0.15/M input $0.6/M output
68 providers
Reasoning Tools Open weights 67.7

Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy

nvidia/nemotron-3-ultra-550b-a55b 2026-06-04 1M context $0.1/M input $0.1/M output
17 providers