X @Elon Musk

RT TΞTSUØ (@tetsuoai)Grok 4.1 Fast just dropped on the API 🔥Until Dec 3rd:✦ Grok 4.1 Fast = FREE on OpenRouter✦All Agent Tools = 100 % FREEThis is the agent model we've all been waiting for:✦ Tool calling: #1 on Berkeley leaderboard✦ Real-world: 100% on τ²-bench Telecom✦ Context: 2M tokens, stays solid on long tasks✦ Hallucinations: cut in half vs Grok 4 Fast✦ Still matches Grok 4 speed✦ Price: $0.20/M input, $0.50/M outputWho’s building? 👀 ...