6 models
Ranked by Terminal-Bench Hard
Reasoning Tools JSON Open weights 35.6

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...

stepfun/step-3.7-flash 2026-05-29 256K context $0.2/M input $1.15/M output
17 providers
Open weights 27.3

Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....

stepfun/step-3.5-flash 2026-01-29 262.144K context $0.1/M input $0.3/M output
14 providers
Tools Open weights 18.9

Mistral's coding-agent model for repository work, terminal tasks, and software fixes

mistral/devstral-2512 2025-12-09 262.144K context $0.4/M input $2/M output
13 providers
Open weights 15.9

Mistral's largest general model for enterprise agents, coding, and multilingual reasoning

mistral/mistral-large-2512 2024-11-01 262.144K context $0.5/M input $1.5/M output
12 providers
Reasoning Tools Open weights 6.1

DeepSeek R1 is here: Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active in an inference pass....

deepseek/deepseek-r1 2025-01-20 64K context $0.7/M input $2.5/M output
14 providers
Tools Open weights 3.0

Popular open Llama workhorse for multilingual chat, coding, and self-hosting

meta/llama-3.3-70b-instruct 2024-12-06 128K context $0.1/M input $0.32/M output
25 providers