TIS-100 Bench: Sequence Sorter

63534 Medium Sequence algorithms Memory & interpreters Built-in puzzle · TIS-100 Bench report →

Sort each zero-terminated sequence before emitting it. The grid has to hold and reorder values with very little local state.

In TIS-100 Bench, 16 LLMs each had one attempt at this TIS-100 puzzle, with 30 minutes to find a working program and keep improving it, without seeing the community leaderboard. 8 of 16 models solved it. No model found a new Pareto-frontier point beyond the community leaderboard.

8 / 16models solved it
1,475best LLM cycles (463 community)
0new frontier points

Records

ScoreCommunity bestBest LLMModel
Cycles4631,475Kimi K3.1 Pro · +219%
Nodes34Fable 5.1 · +33%
Instructions2439GPT-6.1 Sol · +62%

Community records from the community leaderboard when we froze it. A record counts only after fresh-game replay and 100,000 passing random tests.

Pareto frontier

Pareto explorer

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Every model

ModelSolvedBest cyclesBest nodesBest instructionsNew frontier points
01Kimi K3.1 ProYes1,475441—
02GPT-6 AstraYes1,511445—
03GPT-6.1 SolYes1,520439—
04Gemini 4 ArgonYes1,690439—
05Sonnet 5.5Yes1,821551—
06Opus 5.5Yes1,872439—
07Gemini 3.8 FlashYes2,132555—
08Fable 5.1Yes2,982448—
09DeepSeek V4.1 FlashNo————
10GLM-5.3No————
11Grok 4.7No————
12Haiku 5.5No————
13MiMo-V2.6-ProNo————
14Muse Spark 1.3No————
15Muse Wonder 1.0No————
16GPT-6 LunaNo————

Best scores can come from different programs. New frontier points are not matched or beaten on all three scores by any community program.

Best model programs

These programs are in TIS-100 save format and released under the MIT License. All of this puzzle’s model programs are on GitHub and Hugging Face.

Kimi K3.1 Pro Fewest cyclesFewest nodes

1,475 cycles · 4 nodes · 42 instructions63534.1475-4-42.txt on GitHub

Kimi K3.1 Pro program running on 63534 in TIS-100
Node 0
MOV UP,DOWN
Node 3
I: MOV UP,ACC
SAV
MOV ACC,RIGHT
JEZ I
JMP S
M: MOV DOWN,ACC
MOV ACC,RIGHT
S: MOV DOWN,ACC
MOV ACC,DOWN
MOV ACC,RIGHT
JRO RIGHT
SWP
MOV ACC,DOWN
Node 4
MOV 0,UP
I: MOV LEFT,ACC
JGZ C
MOV -1,UP
JMP R
M: MOV -5,LEFT
SWP
MOV LEFT,UP
C: SAV
SUB LEFT
JGZ M
MOV 1,LEFT
R: MOV UP,ACC
MOV ACC,DOWN
JNZ R
Node 7
I: MOV 999,LEFT
JMP R
P: MOV ACC,LEFT
R: MOV UP,ACC
JGZ P
JEZ R
O: MOV LEFT,ACC
SUB 999
JEZ E
ADD 999
MOV ACC,DOWN
JMP O
E: MOV 0,DOWN

Gemini 4 Argon Fewest instructions

1,729 cycles · 4 nodes · 39 instructions63534.1729-4-39.txt on GitHub

Gemini 4 Argon program running on 63534 in TIS-100
Node 0
L: MOV UP, ACC
   MOV ACC, DOWN
   JNZ L
   MOV DOWN, NIL
Node 3
P: MOV 0, RIGHT
   MOV ANY, ACC
   MOV ACC, RIGHT
   JNZ L
   MOV 0, UP
   JMP P
L: MOV ANY, ACC
   MOV ACC, RIGHT
   JNZ L
   MOV 0, DOWN
Node 4
   MOV LEFT, ACC
L1:MOV ACC, UP
   MOV LEFT, ACC
   JNZ L1
   MOV UP, ACC
   MOV ACC, DOWN
   JEZ E
L2:MOV UP, ACC
E: MOV ACC, DOWN
   MOV ACC, DOWN
   JNZ L2
Node 7
   MOV UP, ACC
L: SAV
   SUB UP
   JLZ LS
   MOV UP, ACC
   JEZ O
   SWP
   MOV ACC, LEFT
   JMP S
LS:MOV UP, LEFT
S: SWP
   JMP L
O: SWP
   MOV ACC, DOWN