Office Hours
Live sessions, documented for the cohort
Office Hours are live cohort sessions where we go deeper on roadmap topics, debug together, and discuss what learners are working on. Each session is documented here as an expanded write-up — not just meeting notes, but context and explanations you can reference later.
To join office hours: join the Fetchlens.ai Discord server — that’s where we share the meeting link, time, and reminders.
Age: Office hours are recommended for learners aged 16+. Under 18: join only with parent or guardian permission. Please do not share personal information (phone, address, IDs, exact location, etc.) during sessions. See our Privacy Policy and Terms for the full details.
Cohort 01 Live sessions
Cohort 01 runs 1 May 2026 — 31 July 2026. These are the live sessions for enrolled learners — the most recent session is at the top.
Cohort 01 · Session 2
5 June 2026
Agentic AI meets the cohort. A live Claude + Blender + First Break AI MCP demo that turned Lesson 1B’s GGUF format into a 3D tower, the new Discord-authenticated cohort widget and firstbreakai CLI (login, status, validate — wired to Discord notifications), the roadmap as an LMS, and a deeper run at Qwen3 in pure C — live token-probability visualisation over a 151,936-token vocabulary, top-p / nucleus sampling, temperature, chat templates with <|im_start|> / <|im_end|>, the recursive-clone setup, and replay mode.
Cohort 01 · Session 1
8 May 2026
Cohort 01 kickoff. Three intuitions about LLMs (architecture, autoregressive, vocab-wide probabilities), why Qwen3 0.6B is small but structurally identical to large models, HuggingFace as the “GitHub for models” (Git LFS → Xet, model cards, scale), config.json and the Transformers library, markdown everywhere and Karpathy’s AI-managed knowledge base, the math-or-no-math question, and a live pure-C / GGUF demo with system prompt, --thinking, and --multi-turn flags.
Pre-cohort Earlier sessions
Sessions held before Cohort 01 started. Kept here as reference — the same roadmap topics apply when you follow along later.
Pre-cohort · Office Hours
24 April 2026
NanoGPT speedrun infrastructure: modded-nanogpt repo walkthrough, 8x H100 cost and cloud GPU options, Modal for containerized training, Accelerate and DDP vs FSDP, sharding explained (parameters, gradients, optimizer states), training script demo, HF and W&B secrets setup, and troubleshooting pip/PATH issues on Windows.
Pre-cohort · Office Hours
10 April 2026
Learner LAN stock game (scope and shipping), Claude Code harness leak and safe learning, KV cache caveats, benchmark literacy, Gemma / Matryoshka, nanoGPT speedrun and Tyler Romero’s worklog, DDP and all-reduce, NVLink and DeepSeek-style optimization, Muon optimizer, RoPE/RoFormer in code, and walking through a distributed training script.
Pre-cohort · Office Hours
27 March 2026
Transformer architecture deep dive — why attention replaced LSTMs, self-attention and multi-head attention, decoder-only LLMs, dense vs MoE models, benchmarking, the three pillars of model development, data parallelism (DDP), and Project Watch: Speedrun and Auto Research GPT.
Pre-cohort · Office Hours
13 March 2026
GitHub collaboration (PRs, conflicts, rebasing), Qwen3 inference concepts (temperature, chat templates, speculative decoding, GGUF vs SafeTensors, quantization/precision), cohort-based learning, and Unsloth efficiency.