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Research report 03 / Release momentum

Open Model Momentum

Verified open and disclosed-license model releases, developer activity, and release cadence.

Archived snapshotv17Sep 3, 2026
View latest dataset
Open releases
14

54 total model launches

Developers
12

Named release organizations

Most active
Poolside

2 releases

Open share
26%

Disclosed open availability/license

Interactive figureOpen models
CSV JSON
Data status14 verified records across 4 periods

Each dot is a verified monthly observation of verified releases. Lines connect observations in the same series; missing periods are not treated as zero.

Verified observationHover or focus any mark for exact valuesLast updated Sep 3, 2026

Version ledger

Frozen public editions

Each edition preserves the records, method, sources, and downloads available at publication time.

  1. v37 / latestSep 23, 202632 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 32 records.

  2. v36Sep 22, 202631 records / 40 sources

    +3 records; updated Open releases, Developers, Open share. The frozen snapshot contains 31 records.

  3. v35Sep 21, 202628 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 28 records.

  4. v34Sep 20, 202628 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 28 records.

  5. v33Sep 19, 202627 records / 40 sources

    +3 records; updated Open releases, Developers, Open share. The frozen snapshot contains 27 records.

  6. v32Sep 18, 202624 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 24 records.

  7. v31Sep 17, 202624 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 24 records.

  8. v30Sep 16, 202623 records / 40 sources

    updated Open share. The frozen snapshot contains 23 records.

  9. v29Sep 15, 202623 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 23 records.

  10. v28Sep 14, 202623 records / 40 sources

    updated Open share. The frozen snapshot contains 23 records.

  11. v27Sep 13, 202623 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 23 records.

  12. v26Sep 12, 202623 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 23 records.

  13. v25Sep 11, 202622 records / 40 sources

    +2 records; updated Open releases, Developers, Open share. The frozen snapshot contains 22 records.

  14. v24Sep 10, 202620 records / 40 sources

    +1 records; updated Open releases. The frozen snapshot contains 20 records.

  15. v23Sep 9, 202619 records / 40 sources

    updated Open share. The frozen snapshot contains 19 records.

  16. v22Sep 8, 202619 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 19 records.

  17. v21Sep 7, 202618 records / 40 sources

    -1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 18 records.

  18. v20Sep 6, 202619 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 19 records.

  19. v19Sep 5, 202619 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 19 records.

  20. v18Sep 4, 202618 records / 40 sources

    +4 records; updated Open releases, Developers, Most active. The frozen snapshot contains 18 records.

  21. v17Sep 3, 202614 records / 40 sources

    updated Open share. The frozen snapshot contains 14 records.

  22. v16Sep 2, 202614 records / 40 sources

    updated Open share. The frozen snapshot contains 14 records.

  23. v15Sep 1, 202614 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 14 records.

  24. v14Aug 31, 202613 records / 40 sources

    updated Open share. The frozen snapshot contains 13 records.

  25. v13Aug 30, 202613 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 13 records.

  26. v12Aug 29, 202613 records / 40 sources

    updated Open share. The frozen snapshot contains 13 records.

  27. v11Aug 28, 202613 records / 40 sources

    updated Open share. The frozen snapshot contains 13 records.

  28. v10Aug 28, 202613 records / 40 sources

    updated Open share. The frozen snapshot contains 13 records.

  29. v9Aug 28, 202613 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 13 records.

  30. v8Aug 28, 202612 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 12 records.

Coverage note

This first edition measures release momentum. Historical download and like growth cannot be inferred before periodic snapshots are collected.

Dataset ID
spd:open-model-momentum
Stable URL
/research/open-model-momentum
Version
v17
Coverage
2026-04/2026-08-31
Records
14
Fields
6
Updated

Read the data

The records behind the figure

CSV JSON
Open Model Momentum data records
DateModelDeveloperRelease typeAvailabilityLicense
2026-04-28Laguna XS.2Poolsideopen weightsPreview; Hugging Face, Poolside API, and OpenRouterApache 2.0
2026-06-09Claude Fable 5AnthropicPublic release (Mythos-class); available via API and EnterprisePublicly accessible via API and Enterprise; included in subscription plans through 2026-06-22 after which access requires purchase of usage credits; some sensitive-topic access restricted and Mythos 5 limited to vetted Project Glasswing participants—
2026-07-02Laguna XS 2.1Poolsideopen weightsPoolside API, OpenRouter, Hugging Face weights, and local deploymentOpenMDW-1.1
2026-07-09GPT-5.6 (Sol, Terra, Luna)OpenAIgeneral availabilityGeneral availability following a limited preview—
2026-07-31MiniMax H3MiniMaxAPI and open weightsHosted API globally; downloadable weights restricted to the license's applicable territoriesMiniMax H3 Community License Agreement
2026-08-10Muse GlimmerMetaopen weightsConsumer hardware with 24 GB or 32 GB of memoryApache 2.0
2026-08-11Nemotron 3.5 LightningNvidiaopen weights (public release)Available through Nvidia and model repositories including Hugging Face and ModelScope; NeMo Switchyard available on GitHubOpenMDW-1.1
2026-08-18GPT-5.6 SolOpenAIAPILimited release to a small group of customers; wider access planned later—
2026-08-24ThomsonThomson Reutersenterprise launch; open-weight version plannedInitially available in CoCounsel Legal’s Tabular Analysis feature; smaller version planned for Hugging FaceNon-commercial license for the planned smaller open-weight version
2026-08-26Granite 4.2IBMopen weightsHugging Face, Ollama, GitHub, and other platformsApache 2.0
2026-08-27GLM-5.3-FlashZhipu AIopen-sourceOfficially released; deployable on domestically produced AI chipsMIT
2026-08-27GLM-5.3-FlashZ.aiAPI and open weightsZ.ai API; weights available on Hugging FaceMIT
2026-08-28ABot-ReconAMAP CV Labopen-source releaseInference code, model checkpoint, and evaluation code released; weights limited to noncommercial research and educationApache 2.0 for source code; CC BY-NC 4.0 for model weights
2026-08-31GigaPath-Flash and GigaTIME-FlashMicrosoft Researchopen weights; research releaseHugging FaceApache 2.0

Measurement technique

How to read this report

  1. 01Open status requires an explicit open, community, or named open license/availability disclosure.
  2. 02Momentum currently measures verified release cadence; download-growth snapshots will be added prospectively rather than reconstructed.
  3. 03A model without disclosed licensing is excluded from the open series.

Sources

Evidence

27 publishers supporting 40 records. Expand a publisher to inspect its cited pages.

the-decoder.comthe-decoder.com6 sources / 6 records
Thomson Reuters bets $40M on owning its AI instead of renting from OpenAI or Anthropic1 supporting recordIBM drops open-weight Granite 4.2 family with built-in agentic capabilities under Apache 2.01 supporting recordAlibaba releases Qwen3.8-Flash-Next, targeting "ultimate cost efficiency"1 supporting recordGoogle's Gemini 3.5 Transcribe turns speech to text in 85 languages while auto-correcting your verbal stumbles1 supporting recordGLM-5.3-Flash matches top models at a fraction of the cost, and runs without Nvidia1 supporting recordRunway's Solaris is an AI system that generates software interfaces in real time1 supporting record
Ars Technicaarstechnica.com3 sources / 3 records
IBM's new Granite 4.2 models ride the wave of interest in local LLMs1 supporting recordGoogle releases Gemini 3.8 Flash, its third Flash model in six weeks1 supporting recordGoogle announces Gemini 3.5 Transcribe for AI-powered speech-to-text1 supporting record
marktechpost.commarktechpost.com3 sources / 3 records
Generalist AI Releases GEN-1.5: A Robot Foundation Model That Learns New Tasks From One 3–12 Second Demo1 supporting recordAlibaba's Qwen Team Releases Qwen3.8-Flash-Next: A 125B Multimodal MoE With 6B Active Parameters Previewing the Qwen4 Architecture1 supporting recordZ.ai Releases GLM-5.3-Flash: A 320B-A18B Natively Multimodal MoE With a 1M-Token Context1 supporting record
blog.googleblog.google2 sources / 2 records
Intelligent transcription with Gemini 3.5 Transcribe1 supporting recordIntroducing Gemini 3.7 Flash1 supporting record
campustechnology.comcampustechnology.com2 sources / 2 records
Meta Releases Muse Glimmer, an Open-Weight AI Model Designed to Run on Consumer Hardware -- Campus Technology1 supporting recordMeta Releases Muse Glimmer, an Open-Weight AI Model Designed to Run on Consumer Hardware -- Campus Technology1 supporting record
siliconangle.comsiliconangle.com2 sources / 2 records
Thomson Reuters launches proprietary AI model for legal work - SiliconANGLE1 supporting recordZ.ai open-sources ‘Ox Alpha’ model as GLM-5.3-Flash - SiliconANGLE1 supporting record
Show 21 more publishers
x.aix.ai2 sources / 2 records
Introducing Grok 4.61 supporting recordGrok 4.6 on Amazon Bedrock1 supporting record
aithority.comaithority.com1 source / 1 record
Perceptron AI Launches Isaac 0.5, a Frontier Open-Weight Robotics Model1 supporting record
autoclaw.z.aiautoclaw.z.ai1 source / 1 record
AutoClaw Models | GLM Model Support1 supporting record
CNBCcnbc.com1 source / 1 record
Z.ai shares surge 8% after releasing new AI model running only on Chinese chips1 supporting record
cnet.comcnet.com1 source / 1 record
The Powerful Stealth AI Model ‘Ox Alpha’ Is Now GLM-5.3-Flash, and You Can Use It - CNET1 supporting record
cryptobriefing.comcryptobriefing.com1 source / 1 record
Zhipu launches GLM-5.3-Flash, its first natively multimodal model built for Chinese chips1 supporting record
deccanchronicle.comdeccanchronicle.com1 source / 1 record
Alibaba Releases Smaller, Cost-Effective Qwen AI Model1 supporting record
economictimes.comeconomictimes.com1 source / 1 record
Alibaba's Qwen launches Qwen3.8-Flash AI model with lower training costs - The Economic Times1 supporting record
fool.comfool.com1 source / 1 record
Mark Zuckerberg's Meta Just Open-Sourced Its Most Powerful AI Model to Take on OpenAI and Anthropic. Should Investors Watch Meta's AI Spending Closely? - Yahoo Finance1 supporting record
globaltimes.cnglobaltimes.cn1 source / 1 record
Zhipu AI releases GLM-5.3-Flash model, powered by 100,000 domestically made chips - Global Times1 supporting record
invezz.cominvezz.com1 source / 1 record
Alibaba unveils cheaper Qwen AI model: is this what its stock needed?1 supporting record
itbrief.newsitbrief.news1 source / 1 record
Leiolai launches AI model that runs on user devices1 supporting record
microsoft.commicrosoft.com1 source / 1 record
Making pathology foundation models practical at scale1 supporting record
openai.comopenai.com1 source / 1 record
GPT-5.6: Frontier intelligence that scales with your ambition1 supporting record
readthepeak.comreadthepeak.com1 source / 1 record
Thomson Reuters Launches Its Own AI Model1 supporting record
stocktitan.netstocktitan.net1 source / 1 record
Thomson Reuters launches its own AI model for legal document reviews1 supporting record
theaiinsider.techtheaiinsider.tech1 source / 1 record
Perceptron AI Launches Open-Weight Robotics Model Called 'Isaac 0.5'1 supporting record
thelogic.cothelogic.co1 source / 1 record
Thomson Reuters launches its own AI model to reduce reliance on big tech - The Logic1 supporting record
therobotreport.comtherobotreport.com1 source / 1 record
Skild AI unveils S1 flagship robot foundation model - The Robot Report1 supporting record
vir.com.vnvir.com.vn1 source / 1 record
HiDream.ai releases HiDream-O1-World interactive artificial intelligence model1 supporting record
yahoo.comyahoo.com1 source / 1 record
Alibaba's Qwen launches Qwen3.8-Flash AI model with lower training costs1 supporting record
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