Grok Fast
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
4recommend
2warn against
Nov 8, 2025first mention
Jul 17, 2026latest mention
Why people recommend it
“Grok 4.1 Fast is the cheapest way to do research on X”
“Both of these choke less than Anthropic's own Sonnet”
Show 2 more
“The one I ended up with was Grok 4 Fast, because it's weirdly fast.”
no hardware for local LLMs, uses APIson “Local AI is driving the biggest change in laptops in…”
“I use Grok 4 Fast via API, cheap, fast and almost really well suited for data parsing/extraction”
Caveats and dissent
“did severely worse in a similarly outlandish scenario”
“Requests to grok-4-1-fast-non-reasoning now silently route to grok-4.3 (a 5x more expensive model)”
Often compared with
Who recommends it in their own words
Threads where it came up
- Grok 4 Fast now has 2M context window 3 mentions
- Kimi K3, and what we can still learn from the pelican benchmark 1 mention
- DeepSeek V4 Pro beats GPT-5.5 Pro on precision 1 mention
- Higher usage limits for Claude and a compute deal with SpaceX 1 mention
- Stop Thinking of AI as a Coworker. It's an Exoskeleton 1 mention
- Stop Generating, Start Thinking 1 mention
Also written as Grok 4.1 Fast. Data: grok-fast.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 9
“did severely worse in a similarly outlandish scenario”
“Requests to grok-4-1-fast-non-reasoning now silently route to grok-4.3 (a 5x more expensive model)”
“Grok 4.1 Fast is the cheapest way to do research on X”
“I like this game between grok-4.1-fast and maia-1100”
“Both of these choke less than Anthropic's own Sonnet”
“The one I ended up with was Grok 4 Fast, because it's weirdly fast.”
“I use Grok 4 Fast via API, cheap, fast and almost really well suited for data parsing/extraction”
“Grok: Timed out after 300s of thinking”
“Grok 4 Fast has essentially zero restrictions on safety”