WRITTEN DOWN IN 2026

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Every reading taken in 2026, in the order it was taken. Nothing on this page will ever change.

The longest task an AI can finish on its own · 2026-09-07

Reading: 1,045 minutes
Held by: claude-mythos-preview-early, set 2026-04-07
Checked: Read from METR's published benchmark file, the highest fifty-per-cent horizon among the models it marks as state of the art.

Open problems in mathematics solved · 2026-09-07

Reading: 2.9 per cent
Held by: GPT-6 Astra, set 2026-09-03
Checked: Highest score on FrontierMath-Erdos in Epoch AI's published benchmark file.

Unsolved integer sequences worked out · 2026-09-07

Reading: 29.9 per cent
Held by: Claude Opus 4.8, set 2026-05-28
Checked: Highest score on OEIS Open in Epoch AI's published benchmark file.

Research mathematics solved · 2026-09-07

Reading: 47.9 per cent
Held by: AI Co-Mathematician, set 2026-05-08
Checked: Highest score on FrontierMath-Tier-4-2025-07-01-Private in Epoch AI's published benchmark file.

Real software issues resolved · 2026-09-07

Reading: 83.5 per cent
Held by: Claude Opus 4.7, set 2026-04-16
Checked: Highest score on SWE-Bench verified in Epoch AI's published benchmark file. The official leaderboard stood at 79.2 per cent the same day.

Questions answered without inventing an answer · 2026-09-07

Reading: 75.6 per cent
Held by: GPT-6 Astra, set 2026-09-03
Checked: Highest score on SimpleQA Verified in Epoch AI's published benchmark file.

Chess puzzles solved · 2026-09-07

Reading: 72.0 per cent
Held by: GPT-6 Astra, set 2026-09-03
Checked: Highest score on Chess Puzzles in Epoch AI's published benchmark file.

The largest training run ever disclosed · 2026-09-07

Reading: 5 x 10^26 operations
Held by: Grok 4, set 2025-07-09
Checked: Largest training compute figure among 537 models carrying one, of 1,057 in Epoch AI's database.

The largest training cluster ever disclosed · 2026-09-07

Reading: 200,000 chips
Held by: Grok 4, set 2025-07-09
Checked: Largest hardware quantity among 103 models carrying one, of 529 in Epoch AI's large-scale model database.

The fastest computer on earth · 2026-09-07

Reading: 2,198 petaflops
Held by: LineShine, set 2026-06-22
Checked: Rank one on the 67th TOP500 list of June 2026, read from the list table.

The largest quantum volume · 2026-09-07

Reading: 32,768 quantum volume
Held by: Alpine Quantum Technologies LYNX, set 2026-05-05
Checked: Highest quantum volume in the cross-manufacturer list, confirmed against the manufacturer's own announcement.

Graduate-level science questions · 2026-09-07

Reading: 95.8 per cent
Held by: GPT-6 Astra, set 2026-09-03
Checked: Highest score on GPQA diamond in Epoch AI's published benchmark file.

Hard competition mathematics · 2026-09-07

Reading: 98.1 per cent
Held by: GPT-5, set 2025-08-07
Checked: Highest score on MATH level 5 in Epoch AI's published benchmark file.

Olympiad qualifying papers · 2026-09-07

Reading: 100 per cent
Held by: Claude Fable 5.1, set 2026-09-01
Checked: Highest score on OTIS Mock AIME 2024-2025 in Epoch AI's published benchmark file.

Research mathematics, lower tiers · 2026-09-07

Reading: 93.7 per cent
Held by: GPT-6 Astra, set 2026-09-03
Checked: Highest score on FrontierMath-Tiers-1-3-v2-Private in Epoch AI's published benchmark file.

The most arithmetic per watt · 2026-09-09

Reading: 73.282 gigaflops per watt
Held by: KAIROS, set 2025-11-18
Checked: Rank one on the 27th Green500 list of June 2026, read from the list table. The same machine and the same figure led the 26th list of November 2025, which is where it was set.

The largest prime number ever found · 2026-09-10

Reading: 41,024,320 digits
Held by: GIMPS, set 2024-10-12
Checked: Rank one of the five thousand largest known primes, 2^136279841-1, in the Prime Pages list dated 2026-09-06. The day it was found comes from the discoverer's own list of known Mersenne primes at mersenne.org/primes/, which the Prime Pages dates only to the year.

The largest quantum volume · 2026-09-11

Reading: 8,388,608 quantum volume
Held by: Quantinuum H2, set 2025-05-12
Checked: The largest of the twenty-seven figures in the cross-manufacturer list, read by parsing the table rather than by looking at the end of it. Two files, because the list and the claim carry different facts: the figure and the ranking from the list, the date from Quantinuum's own announcement of 2025-05-12, which gives the quantum volume as two to the twenty-third. The list's date column holds 2024-06-05, which is when the machine shipped, not when the record was claimed.

The smallest a gigabyte of Wikipedia has ever been made · 2026-09-12

Reading: 96,996,198 bytes
Held by: fx2-cmix-transformer, set 2026-07-24
Checked: The smallest of the 222 total-size figures in the main ranked list, on the page as updated 2026-09-08. The list is not sorted by that column throughout, so it was sorted in a script; the smallest happened to be the top row this time. The entry's own section dates the ranked run to 2026-07-24 and reports a later run two thousand bytes smaller that the main list does not carry, which is why the ranked figure is the one recorded. Read over https with the www host: the bare http host answers with a reloading interstitial instead of the page.

The most data ever read and written in a second · 2026-09-13

Reading: 26,888 gibibytes a second
Held by: SCNet AICS-A, set 2026-06-12
Checked: The largest of the 321 bandwidth figures in the Full List of the ISC26 edition, downloaded as a CSV from that list's own Download link and sorted in a script. It is not the top row: the list ranks on a composite score, and the bandwidth record is four rows down, 26,888.39 gibibytes a second against rank one's 8,291.11. The figure reproduces as the geometric mean of the submission's four large-file phases from the same row. The date is the submission date recorded there; the machine is a Sugon ParaStor filesystem at SCNet, read and written by 500 client nodes.

The most connections ever followed in a second · 2026-09-14

Reading: 410,266 billion edges a second
Held by: eos-dfw, set 2025-11-18
Checked: The largest of the 277 figures in the GTEPS column of the Complete Results list, sorted in a script rather than read off the top row. It is the top row this time, at 410,266.553 against the 204,068 of Supercomputer Fugaku beneath it, which the list marks as the previous holder. The date is the page's own last-modified stamp, which is the day the November 2025 edition went up; the June 2025 edition, still served at its own address, tops out at Fugaku's 204,068, so this is the list on which the record moved. The machine is 1,024 nodes of NVIDIA HGX H100 at a CoreWeave datacentre in Dallas, and its figure was set at scale 41 - a graph of two to the forty-first vertices - where Fugaku's was set at scale 43.

The smallest a gigabyte of Wikipedia has ever been made · 2026-09-15

Reading: 96,849,689 bytes
Held by: rata-cmix 1.0.0, set 2026-09-12
Checked: The smallest of the 224 total-size figures in the main ranked list, on the page as updated 2026-09-12 - two rows longer than the list read three days ago, and the new smallest is one of them. The column was sliced by the positions of the page's own rule of dashes and sorted in a script, because the list is not sorted by that column throughout. The entry's own section credits Dharmesh Patel and Naveen Bijalwan and dates the submission to 2026-09-12, which is where the date comes from; it is a descendant of fx2-cmix-transformer, the program it displaces. Read over https with the www host, as always: the bare http host answers with a reloading interstitial instead of the page.

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