April 15 brings the first five-model board of the season. Codex debuts with 12u, Kansas City becomes the side consensus, and Mariners-Padres Under is the total everyone keeps circling.
The contest gets bigger today. Codex is officially on the board for April 15, which means Daily MLB Picks is no longer a four-model room. It is ChatGPT, Claude, Gemini, Grok, and Codex all sitting on the same slate, all tracked under the same rules, all exposed to the same grading.
The debut card is not cautious. Codex comes in with seven plays and 12.0u committed, the biggest unit load of the day. The card has a clear spine: Kansas City full game, Kansas City first five, Angels plus money, Angels-Yankees Over, Braves first five, Rays ML, and Mariners-Padres Under.
The line rule matters more now. With five AIs in the pool, duplicate markets have to be standardized or the contest turns sloppy fast. Kansas City appears across ChatGPT, Gemini, Claude, and Codex, so the full-game Royals price is listed as KC +113 everywhere. Mariners-Padres Under appears on four cards too, so the shared total is U 8 (-111). Same market, same line, same grading target.
Grok is the exception only where the source card gave approximate ranges instead of fixed numbers. Baltimore is listed around -154 to -163, and St. Louis around -112 to -115. That is not a formatting miss. That is preserving the source honestly instead of pretending a precise number existed.
| # | Model | Record | Units | Win% |
|---|---|---|---|---|
| 1 | Gemini | 40-38-4 | -15.66u | 51.3% |
| 2 | ChatGPT | 47-44-7 | -19.30u | 51.6% |
| 3 | Claude | 53-63-7 | -31.90u | 45.7% |
| 4 | Grok | 49-60-4 | -39.12u | 45.0% |
| D | Codex | 0-0-0 | 0.00u | Debut |
Combined: 189-205-22 | -105.98u
Gemini still holds the lead at -15.66u, with ChatGPT 3.64u behind. Claude is third, Grok is fourth, and Codex starts from zero today. That is the cleanest possible entry point: no inherited damage, no old record to explain, just one card and a score that starts moving after first pitch.
Five models. Twenty-seven official picks. Forty-five and a half units committed if you add every card together. The board is smaller than some of the monster early-season slates, but the concentration is obvious.
Kansas City is the side everyone wants. ChatGPT has Royals ML for 1.5u. Gemini has KC Moneyline for 2.0u. Claude has KC Moneyline and KC First 5 ML for 4u total. Codex has the exact same full-game and first-five stack for another 4u. The shared full-game price is KC +113, and that turns the Royals into the day's most important side.
Mariners-Padres Under 8 is the total consensus. ChatGPT, Gemini, Claude, and Codex all play it. The shared number is U 8 (-111). That is four AIs, six combined units, and a late-window sweat that will probably decide how the day feels.
Cleveland-St. Louis is split by market. ChatGPT, Gemini, and Claude all take the Over 8.5 at -106. Grok takes the Cardinals Moneyline in an approximate -112 to -115 range. The total says runs. Grok says St. Louis. Those can both win, but it is still the most interesting cross-market disagreement on the board.
The Arizona-Baltimore clash is the cleanest head-to-head. ChatGPT takes Diamondbacks ML at +135. Grok takes Orioles ML around -154 to -163. No derivative market, no angle split, just two AIs on opposite sides of the same game.
The Angels get two believers. ChatGPT has Angels ML at +161 for 1u, while Codex has LAA Moneyline at +161 for 1.5u and adds LAA at NYY Over 9.5 for 1.5u. That is a volatile game profile, but the contest finally has more than one AI willing to take the Los Angeles dog.
ChatGPT, 8.0u: Cubs ML +113 (2u), Royals ML +113 (1.5u), Diamondbacks ML +135 (1u), Guardians Cardinals Over 8.5 -106 (1.5u), Angels ML +161 (1u), Mariners Padres Under 8 -111 (1u).
Claude, 11.5u: KC Moneyline +113 (2u), KC First 5 ML -100 (2u), CLE at STL Over 8.5 -106 (2u), SEA at SD Under 8 -111 (2u), MIA at ATL Under 9 -105 (2u), BOS Moneyline -137 (1.5u).
Gemini, 10.5u: BOS Moneyline -137 (2.5u), KC Moneyline +113 (2.0u), TB at CWS Under 8 -116 (2.0u), CLE at STL Over 8.5 -106 (1.5u), SF at CIN Over 9 -109 (1.5u), SEA at SD Under 8 -111 (1.0u).
Grok, 3.5u: Baltimore Orioles Moneyline vs Arizona Diamondbacks, around -154 to -163 (2u), St. Louis Cardinals Moneyline vs Cleveland Guardians, around -112 to -115 (1.5u).
Codex, 12.0u: KC Moneyline +113 (2.0u), KC First 5 ML -100 (2.0u), LAA Moneyline +161 (1.5u), LAA at NYY Over 9.5 -105 (1.5u), ATL First 5 ML -156 (1.5u), TB Moneyline -120 (1.5u), SEA at SD Under 8 -111 (2.0u).
Codex tags: Best bet is KC First 5 ML -100. Best total is SEA at SD Under 8 -111. Most price sensitive dog is LAA Moneyline +161.