Tufa Labs
The ARC-AGI-3 competitor notebook for Tufa Labs: sourced background, observed team names and ARC Daily coverage.
Competition: ARC-AGI-3. Team ID: 15486995.
First observed by the newspaper: . Last checked: . Observation dates are not competition join dates.
Public team roster
What is on the record
ARC Prize named Tufa Labs and its Duck agent the first-place open-source solution for the June 2026 ARC-AGI-3 Milestone 1 prize. ARC Prize — ARC-AGI-3 Milestone 1 results (checked )
Tufa Labs says its public Duck harness lets an LLM inspect game grids as image and text, write Python in a REPL, and keep context short by evicting older messages. This describes the published Milestone 1 system, not an unverified current submission. Tufa Labs — Duck Harness technical overview (checked )
Tufa Labs lists Dries Smit, Isaiah Pressman and Jeroen Cottaar among its AI researchers, with research interests spanning reinforcement learning, self-play and Bayesian methods. Tufa Labs — team profiles (checked )
On October 9, 2026, Tufa Labs described a temporary setback in a public X post and said it remained dedicated to crushing competitors with overwhelming resources and compute. Tufa Labs — October 9 public competition post (checked )
In the paper
- Yi-Chia Chen holds ARC-3 lead as Semwal breaks into top 100
- Yi-Chia Chen takes the ARC-AGI-3 lead from Tufa Labs
- Yi-Chia Chen takes the ARC3 lead from Tufa Labs at 71.48
- Yi-Chia Chen closes within 0.70 of Tufa on ARC3
- Yi-Chia Chen closes on Tufa Labs; Team Turducken strengthens third
- 復活の混テキスト takes seventh as ARC-AGI-3 leaders hold their ground
- Abstraction Lab & MindsAI reaches 23rd as ARC-3 leaders hold
- Jan Disselhoff reaches ARC-AGI-3’s provisional gold places
- insuperabilehart closes on ARC-3 gold as jf liao vaults into silver
- Tong Hui Kang reaches 20th, a whisker from ARC-3 gold
- rellik13 leaps to 28th as ARC3’s leaders hold
- wkdrbwnd1 leaps to 26th as ARC-3’s gold chase gathers pace
- A sneak peek inside the Tufa Citadel
- Turducken opens a gap in third; Zatravkin reaches sixth
- Team Turducken closes fifth as its seven-person merger reaches the board
- Daniel Franzen enters gold as ARC-3’s leaders hold
- cha7ura leaps to 25th as ARC-3’s gold line holds
- Grigoriy Zatravkin takes seventh as ARC-3’s chase tightens
- mtg takes third as the ARC-3 chase clears fifty
- The last dance takes third as the ARC-3 chase shifts again
- Son & Mark & Ronen take third as Argon puts the harness in focus
- AquaUrsa Research jumps into ARC-3 gold as the cutoff rises
- Jing Hua and Juyong climb into ARC-3’s top 35 as Tufa holds the lead
- Artificial Agency Lab breaks into ARC-3’s top ten as the gold line rises
- Tufa takes ARC-3 into the evening lead; Vineeth joins the top ten
- Tufa retakes the ARC-AGI-3 lead as NVARC3 climbs to fourth
- Chen continues to extend her lead over Tufa
- Yi-Chia Chen lifts ARC-AGI-3 to 67.49 as the top ten reshuffles
- AFF AI CLUB breaks into ARC-3’s top ten as Yi-Chia Chen holds the lead
- Yi-Chia Chen holds first as Son & Mark & Ronen break into the top ten
- Yi-Chia Chen stretches ARC-3 lead as Keith Tyser storms into 13th
- Yi-Chia Chen stretches the ARC-AGI-3 lead to 62.96
- Yi-Chia Chen takes ARC-3 lead as mtg climbs to third
- Yi-Chia Chen takes ARC-AGI-3 lead as two challengers surge
- A new top-eight contender shakes ARC-AGI-3 while the lead narrows to a whisker
- Yi-Chia Chen closes to striking distance of ARC-AGI-3 lead
- A charge from 170th to seventh jolts the ARC-AGI-3 chase
Live ARC-AGI-3 box score · Competitor notebook · The ARC Daily Digest front page