Reasoning Tools Open weights

StepFun flash lane for quick multimodal reasoning and coding assistance

stepfun/step-3.5-flash 2026-01-29 256K context $0.105/M input $0.314/M output
15 providers
Reasoning Tools JSON Open weights

Earlier Kimi frontier model for long-context agents, coding, and multimodal work

moonshotai/kimi-k2.5 2026-01-27 262.144K context $0.375/M input $2/M output
47 providers
Reasoning Tools JSON Open weights

Thinking Kimi model for slower research passes, planning, and hard technical questions

moonshotai/kimi-k2-thinking 2025-11-06 262.144K context $0.4/M input $2.5/M output
23 providers
Tools JSON Open weights

September 2025 Kimi K2 instruction update with a 256K context and improved agentic coding

moonshotai/kimi-k2-0905 2025-09-05 262.144K context $0.6/M input $2.5/M output
8 providers
Reasoning Tools JSON Open weights

Dense open Qwen model for self-hosted chat, reasoning, and coding

alibaba/qwen3-32b 2025-04-28 131.072K context $0.7/M input $2.8/M output
16 providers
Reasoning Tools Open weights

Classic open reasoning model for transparent math, coding, and deliberate problem solving

deepseek/deepseek-r1 2025-01-20 128K context $0.58/M input $2.319/M output
16 providers