Viewing enriched Twitter post
LongCoT: Benchmarking Long-Horizon Chain-of-Thought Reasoning "We introduce LongCoT, a scalable benchmark of 2,500 expert-designed problems spanning chemistry, mathematics, computer science, chess, and logic to isolate and directly measure the long-horizon CoT reasoning capabilities of frontier models." "At release, the best models achieve <10% accuracy (GPT 5.2: 9.8%; Gemini 3 Pro: 6.1%) on LongCoT, revealing a substantial gap in current capabilities."
{
"media": [
{
"type": "photo",
"url": "https://crmoxkoizveukayfjuyo.supabase.co/storage/v1/object/public/media/posts/2044685430323396709/media_0.jpg",
"filename": "media_0.jpg"
}
],
"processed_at": "2026-04-16T07:54:10.653570",
"pipeline_version": "2.0"
}{
"type": "tweet",
"id": "2044685430323396709",
"url": "https://x.com/iScienceLuvr/status/2044685430323396709",
"twitterUrl": "https://twitter.com/iScienceLuvr/status/2044685430323396709",
"text": "LongCoT: Benchmarking Long-Horizon Chain-of-Thought Reasoning\n\n\"We introduce LongCoT, a scalable benchmark of 2,500 expert-designed problems spanning chemistry, mathematics, computer science, chess, and logic to isolate and directly measure the long-horizon CoT reasoning capabilities of frontier models.\"\n\n\"At release, the best models achieve <10% accuracy (GPT 5.2: 9.8%; Gemini 3 Pro: 6.1%) on LongCoT, revealing a substantial gap in current capabilities.\"",
"source": "Twitter for iPhone",
"retweetCount": 0,
"replyCount": 1,
"likeCount": 0,
"quoteCount": 0,
"viewCount": 22,
"createdAt": "Thu Apr 16 07:52:49 +0000 2026",
"lang": "en",
"bookmarkCount": 0,
"isReply": false,
"inReplyToId": null,
"conversationId": "2044685430323396709",
"displayTextRange": [
0,
273
],
"inReplyToUserId": null,
"inReplyToUsername": null,
"author": {
"type": "user",
"userName": "iScienceLuvr",
"url": "https://x.com/iScienceLuvr",
"twitterUrl": "https://twitter.com/iScienceLuvr",
"id": "441465751",
"name": "Tanishq Mathew Abraham, Ph.D.",
"isVerified": false,
"isBlueVerified": true,
"verifiedType": null,
"profilePicture": "https://pbs.twimg.com/profile_images/2005802886622552064/4jiatr43_normal.jpg",
"coverPicture": "https://pbs.twimg.com/profile_banners/441465751/1738204246",
"description": "",
"location": "",
"followers": 86574,
"following": 1402,
"status": "",
"canDm": true,
"canMediaTag": true,
"createdAt": "Tue Dec 20 03:45:50 +0000 2011",
"entities": {
"description": {
"urls": []
},
"url": {}
},
"fastFollowersCount": 0,
"favouritesCount": 121055,
"hasCustomTimelines": true,
"isTranslator": false,
"mediaCount": 2767,
"statusesCount": 19795,
"withheldInCountries": [],
"affiliatesHighlightedLabel": {},
"possiblySensitive": false,
"pinnedTweetIds": [
"2019996902960288247"
],
"profile_bio": {
"description": "CEO @SophontAI |\nFounder @MedARC_AI |\nPhD at 19 (2023) |\nex Research Director Stability AI | \nBiomed. engineer @ 14 |\nTEDx talk➡https://t.co/xPxwKTpz0D",
"entities": {
"description": {
"hashtags": [],
"symbols": [],
"urls": [
{
"display_url": "bit.ly/3tpAuan",
"expanded_url": "https://bit.ly/3tpAuan",
"indices": [
128,
151
],
"url": "https://t.co/xPxwKTpz0D"
}
],
"user_mentions": [
{
"id_str": "0",
"indices": [
4,
14
],
"name": "",
"screen_name": "SophontAI"
},
{
"id_str": "0",
"indices": [
25,
35
],
"name": "",
"screen_name": "MedARC_AI"
}
]
},
"url": {
"urls": [
{
"display_url": "sophont.med",
"expanded_url": "https://sophont.med",
"indices": [
0,
23
],
"url": "https://t.co/MvROZZVu9I"
}
]
}
}
},
"isAutomated": false,
"automatedBy": null
},
"extendedEntities": {
"media": [
{
"allow_download_status": {
"allow_download": true
},
"display_url": "pic.twitter.com/yIU3YeRlSE",
"expanded_url": "https://twitter.com/iScienceLuvr/status/2044685430323396709/photo/1",
"ext_media_availability": {
"status": "Available"
},
"features": {
"large": {
"faces": []
},
"orig": {
"faces": []
}
},
"id_str": "2044685329999753216",
"indices": [
274,
297
],
"media_key": "3_2044685329999753216",
"media_results": {
"id": "QXBpTWVkaWFSZXN1bHRzOgwAAQoAARxgLnl0FnAACgACHGAukM/XwGUAAA==",
"result": {
"__typename": "ApiMedia",
"id": "QXBpTWVkaWE6DAABCgABHGAueXQWcAAKAAIcYC6Qz9fAZQAA",
"media_key": "3_2044685329999753216"
}
},
"media_url_https": "https://pbs.twimg.com/media/HGAueXQWcAAuB18.jpg",
"original_info": {
"focus_rects": [
{
"h": 730,
"w": 1304,
"x": 0,
"y": 0
},
{
"h": 1304,
"w": 1304,
"x": 0,
"y": 0
},
{
"h": 1487,
"w": 1304,
"x": 0,
"y": 0
},
{
"h": 1699,
"w": 850,
"x": 0,
"y": 0
},
{
"h": 1699,
"w": 1304,
"x": 0,
"y": 0
}
],
"height": 1699,
"width": 1304
},
"sizes": {
"large": {
"h": 1699,
"w": 1304
}
},
"type": "photo",
"url": "https://t.co/yIU3YeRlSE"
}
]
},
"card": null,
"place": {},
"entities": {
"hashtags": [],
"symbols": [],
"urls": [],
"user_mentions": []
},
"quoted_tweet": null,
"retweeted_tweet": null,
"isLimitedReply": false,
"communityInfo": null,
"article": null
}