Mehul Mohan(@mehulmpt):DeepSeek v4.1 flash is the first open-weight model I have used much more on a daily basis than closed-weight models from OpenAI and Anthropic. It is a MAJOR problem for US labs. ◆ Very fast over API (often 150-200+ tps) ◆ Very capable model, can do long-horizon + multiple subagent work very well. ◆ Ridiculously cheap. You don't even need a subscription at the pricing.

Mehul Mohan

@mehulmpt

playing with AI research/RL environments at @TachyonAILab. most tweets are notes to self, some for fun. prev founder @fermionapp (acq)

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Mehul Mohan@mehulmpt

2026.09.16 13:00

DeepSeek v4.1 flash is the first open-weight model I have used much more on a daily basis than closed-weight models from OpenAI and Anthropic. It is a MAJOR problem for US labs. ◆ Very fast over API (often 150-200+ tps) ◆ Very capable model, can do long-horizon + multiple subagent work very well. ◆ Ridiculously cheap. You don't even need a subscription at the pricing.