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The Hutter Prize is a cash prize funded by Marcus Hutter which rewards data compression improvements on a specific 1 GB English text file, with the goal of encouraging research in artificial intelligence (AI).
Launched in 2006, the prize awards 5000 euros for each one percent improvement (with 500,000 euros total funding)[1] in the compressed size of the file enwik9, which is the larger of two files used in the Large Text Compression Benchmark (LTCB);[2] enwik9 consists of the first 109 bytes of a specific version of English Wikipedia.[3] The ongoing[4] competition is organized by Hutter, Matt Mahoney, and Jim Bowery.[1]
The prize was announced on August 6, 2006[1] with a smaller text file: enwik8 consisting of 100MB. On February 21, 2020 it was expanded by a factor of 10, to enwik9 of 1GB, the prize went from 50,000 to 500,000 euros.
The goal of the Hutter Prize is to encourage research in artificial intelligence (AI). The organizers believe that text compression and AI are equivalent problems. Hutter proved that the optimal behavior of a goal-seeking agent in an unknown but computable environment is to guess at each step that the environment is probably controlled by one of the shortest programs consistent with all interaction so far.[5] However, there is no general solution because Kolmogorov complexity is not computable. Hutter proved that in the restricted case (called AIXItl) where the environment is restricted to time t and space l, a solution can be computed in time O(t2l), which is still intractable.
The organizers further believe that compressing natural language text is a hard AI problem, equivalent to passing the Turing test. Thus, progress toward one goal represents progress toward the other. They argue that predicting which characters are most likely to occur next in a text sequence requires vast real-world knowledge. A text compressor must solve the same problem in order to assign the shortest codes to the most likely text sequences.[6]
Models like ChatGPT are not ideal for the Hutter Prize for a variety of reasons, they might take more computational resources than those allowed by the competition (computational and storage space).
The contest is open-ended. It is open to everyone. To enter, a competitor must submit a compression program and a decompressor that decompresses to the file enwik9.[3] It is also possible to submit a compressed file instead of the compression program. The total size of the compressed file and decompressor (as a Win32 or Linux executable) must be less than or equal 99% of the previous prize winning entry. For each one percent improvement, the competitor wins 5,000 euros. The decompression program must also meet execution time and memory constraints.
Submissions must be published in order to allow independent verification. There is a 30-day waiting period for public comment before awarding a prize. In 2017, the rules were changed to require the release of the source code under a free software license, out of concern that "past submissions [which did not disclose their source code] had been useless to others and the ideas in them may be lost forever."[4]
| Author | Date | Program | Total size | Award |
|---|---|---|---|---|
| Kaido Orav and Bryon Knoll | September 3, 2024 | fx2-cmix | 110,793,128 | 7,950€ |
| Kaido Orav | February 2, 2024 | fx-cmix | 112,578,322 | 6,911€ |
| Saurabh Kumar | July 16, 2023 | fast cmix | 114,156,155 | 5,187€ |
| Artemiy Margaritov | May 31, 2021 | starlit | 115,352,938 | 9,000€ |
| Alexander Rhatushnyak | July 4, 2019 | phda9v1.8 | 116,673,681 | No prize |
| Alexander Rhatushnyak | November 4, 2017 | phda9 | 15,284,944 | 2,085€ |
| Alexander Rhatushnyak | May 23, 2009 | decomp8 | 15,949,688 | 1,614€ |
| Alexander Rhatushnyak | May 14, 2007 | paq8hp12 | 16,481,655 | 1,732€ |
| Alexander Rhatushnyak | September 25, 2006 | paq8hp5 | 17,073,018 | 3,416€ |
| Matt Mahoney | March 24, 2006 | paq8f | 18,324,887 | No prize |
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