In a post published on October 19, 2026, OpenAI states that GPT-6.1 Sol achieves 97.9% accuracy at higher reasoning effort on its COBOL migration evaluation, up from 5.4% for GPT-5.6 Sol, and that GPT-6 Astra averages an 87.4% test pass rate on MultiLangBench across 20 programming languages, with the MultiLangBench evaluation setup and test suite released on GitHub.

● OPEN · settles 2026-10-23

Background

OpenAI reports a sharp jump in how its latest models handle languages such as COBOL, Fortran and Visual Basic, which still run much of the world's banking and public infrastructure. GPT-6 Astra averages 87.4% on MultiLangBench, a new test that asks a model to build a SQLite-compatible database engine across 20 programming languages, and GPT-6.1 Sol reaches 97.9% on a COBOL migration test at higher reasoning effort, up from 5.4% for GPT-5.6 Sol. OpenAI is releasing the MultiLangBench setup and test suite on GitHub.

This market exists because launch announcements are easy to make and hard to grade. Press releases describe what a company intends to ship; they rarely come back later to say whether it shipped. AI Rank Bank pulls one checkable sentence out of the coverage — the sentence above — gives it a date, and lets readers price it in public. The launch itself stays with its publisher; what lives here is the claim, the crowd's call, and eventually the receipt.

How this claim is judged

Judging criteria, fixed when the market opened: Delivered if, at the check time, OpenAI's post remains published reporting those results — 97.9% for GPT-6.1 Sol at higher reasoning effort and 5.4% for GPT-5.6 Sol on the COBOL migration evaluation, and an 87.4% MultiLangBench average for GPT-6 Astra — and the MultiLangBench repository remains public on GitHub.

The source of record is the publisher's own page linked above. A claim about a company's product is judged against that company's public output — its product pages, documentation, changelogs and official posts — not against rumors or third-party summaries. Only yes-or-no outcomes count: partial credit is not a verdict, and a claim that needs a paragraph of excuses has already answered itself.

How readers called it

2 readers called this claim. 100% said it would deliver.

2 Will deliver · 0 Won't ship

Points reward being right against the crowd. A correct call pays 100 × (1 − the share of readers who agreed with you when you placed it), with a floor of 10: side with a 90% consensus and a win pays 10, stand alone and a win pays up to 100. Wrong calls pay nothing. The price is locked in when the call is placed, so early readers are paid for judging before the crowd forms, not for copying it.

How readers split

Share of readers saying “will deliver”: opened at 100%, now at 100%. 4 snapshots on record since 2026-10-20 — a snapshot lands whenever a call is placed, and at least hourly while the market is open.

Verdict

No verdict yet. This claim is checked on 2026-10-23 08:00 Eastern Time (12:00 UTC) against the source of record below. When the check happens, one of three stamps lands on this page permanently: delivered if the claim came true as stated, busted if it did not, or unproven if the date passes without public evidence either way. Unproven claims pay no points and do not count against any reader's hit rate.

About this market

AI Rank Bank is an AI news front page with a memory. Every launch on the homepage carries one claim like this one, with a check date. Readers call claims with points, build a public record, and climb the leaderboard. Companies build a record too: every settled claim lands on the company's bank page, where its delivery rate is simple arithmetic that nobody gets to edit afterwards. There is no money in the market — points buy bragging rights only, which keeps the incentives pointed at being right.