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Open weights trend

Open-weight models / tracked models with known accessibility per publication month. Unknown accessibility is not closed source, and open weights do not imply a fully open-source license.

Open weights trend

Open weights trend2024-12-01: 46.15%; 2025-01-01: 50.00%; 2025-02-01: 0.00%; 2025-03-01: 50.00%; 2025-04-01: 50.00%; 2025-05-01: 14.29%; 2025-06-01: 25.00%; 2025-07-01: 70.00%; 2025-08-01: 36.36%; 2025-09-01: 55.56%; 2025-10-01: 50.00%; 2025-11-01: 21.05%; 2025-12-01: 61.54%; 2026-01-01: 0.00%; 2026-02-01: 50.00%; 2026-03-01: 11.11%; 2026-04-01: 47.06%; 2026-05-01: 0.00%; 2026-06-01: 40.00%; 2026-07-01: 71.43%; 2026-08-01: 55.56%; 2026-09-01: 5.00%; 2026-10-01: 16.67%; 2026-11-01: missing035.771.42024-12-01: 46.15 %2025-01-01: 50.00 %2025-02-01: 0.00 %2025-03-01: 50.00 %2025-04-01: 50.00 %2025-05-01: 14.29 %2025-06-01: 25.00 %2025-07-01: 70.00 %2025-08-01: 36.36 %2025-09-01: 55.56 %2025-10-01: 50.00 %2025-11-01: 21.05 %2025-12-01: 61.54 %2026-01-01: 0.00 %2026-02-01: 50.00 %2026-03-01: 11.11 %2026-04-01: 47.06 %2026-05-01: 0.00 %2026-06-01: 40.00 %2026-07-01: 71.43 %2026-08-01: 55.56 %2026-09-01: 5.00 %2026-10-01: 16.67 %12/0111/01 UTC

Total 841 · Page 3/34 · Sample synced 11/09, 03:30 UTC

NameGroupReported valueDateNotesSource
MAI-Code-1-FlashAPI access—2026-06-02API accessSource ↗
MiniMax-M3Open weights (restricted use)—2026-06-01Open weights (restricted use)Source ↗
Claude Opus 4.8API access—2026-05-28API accessSource ↗
Gemini 3.5 FlashAPI access—2026-05-19API accessSource ↗
Composer 2.5API access—2026-05-18API accessSource ↗
TML-Interaction-SmallUnreleased—2026-05-11UnreleasedSource ↗
GPT-5.5 CyberUnreleased—2026-05-07UnreleasedSource ↗
GPT-5.5 InstantAPI access—2026-05-05API accessSource ↗
DeepSeek-V4-ProOpen weights (unrestricted)—2026-04-24Open weights (unrestricted)Source ↗
DeepSeek-V4-FlashOpen weights (unrestricted)—2026-04-24Open weights (unrestricted)Source ↗
Tencent Hy3 previewOpen weights (restricted use)—2026-04-23Open weights (restricted use)Source ↗
MiMo-V2.5-ProOpen weights (unrestricted)—2026-04-23Open weights (unrestricted)Source ↗
GPT-5.5 ProAPI access—2026-04-23API accessSource ↗
GPT-5.5API access—2026-04-23API accessSource ↗
GPT Image 2API access—2026-04-21API accessSource ↗
Kimi K2.6Open weights (unrestricted)—2026-04-20Open weights (unrestricted)Source ↗
Claude Opus 4.7API access—2026-04-16API accessSource ↗
Gemini Flash 3.1 TTSAPI access—2026-04-15API accessSource ↗
GPT-5.4-CyberLimited access—2026-04-14Limited accessSource ↗
EXAONE 4.5Open weights (restricted use)—2026-04-09Open weights (restricted use)—
Muse SparkAPI access—2026-04-08API accessSource ↗
GLM-5.1Open weights (unrestricted)—2026-04-07Open weights (unrestricted)Source ↗
Claude Mythos PreviewLimited access—2026-04-07Limited accessSource ↗
MolmoAct 2Open weights (unrestricted)—2026-04-05Open weights (unrestricted)Source ↗
Qwen 3.6 PlusAPI access—2026-04-01API accessSource ↗

Data: Epoch AI · CC BY · View source · Automatically synced; not an exhaustive global sample