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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 snapshotv8Aug 28, 2026
View latest dataset
Open releases
12

35 total model launches

Developers
10

Named release organizations

Most active
Poolside

2 releases

Open share
34%

Disclosed open availability/license

Interactive figureOpen models
CSV JSON
Data status12 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 Aug 28, 2026

Version ledger

Frozen public editions

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

  1. v66 / latestOct 22, 202672 records / 40 sources

    +3 records; updated Open releases, Developers. The frozen snapshot contains 72 records.

  2. v65Oct 21, 202669 records / 40 sources

    +3 records; updated Open releases, Developers, Open share. The frozen snapshot contains 69 records.

  3. v64Oct 20, 202666 records / 40 sources

    +3 records; updated Open releases, Developers. The frozen snapshot contains 66 records.

  4. v63Oct 19, 202663 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 63 records.

  5. v62Oct 18, 202663 records / 40 sources

    +1 records; updated Open releases. The frozen snapshot contains 63 records.

  6. v61Oct 17, 202662 records / 40 sources

    -1 records; updated Open releases, Developers. The frozen snapshot contains 62 records.

  7. v60Oct 16, 202663 records / 40 sources

    +4 records; updated Open releases, Developers. The frozen snapshot contains 63 records.

  8. v59Oct 15, 202659 records / 40 sources

    +3 records; updated Open releases, Developers, Open share. The frozen snapshot contains 59 records.

  9. v58Oct 14, 202656 records / 40 sources

    updated Open share. The frozen snapshot contains 56 records.

  10. v57Oct 13, 202656 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 56 records.

  11. v56Oct 12, 202655 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 55 records.

  12. v55Oct 11, 202655 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 55 records.

  13. v54Oct 10, 202654 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 54 records.

  14. v53Oct 9, 202654 records / 40 sources

    Source-backed fields changed; the frozen snapshot contains 54 records.

  15. v52Oct 8, 202654 records / 40 sources

    updated Open share. The frozen snapshot contains 54 records.

  16. v51Oct 7, 202654 records / 40 sources

    +4 records; updated Open releases, Developers, Open share. The frozen snapshot contains 54 records.

  17. v50Oct 6, 202650 records / 40 sources

    +4 records; updated Open releases, Developers, Open share. The frozen snapshot contains 50 records.

  18. v49Oct 5, 202646 records / 40 sources

    updated Open share. The frozen snapshot contains 46 records.

  19. v48Oct 4, 202646 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 46 records.

  20. v47Oct 3, 202645 records / 40 sources

    +2 records; updated Open releases, Developers, Open share. The frozen snapshot contains 45 records.

  21. v46Oct 2, 202643 records / 40 sources

    +2 records; updated Open releases, Developers. The frozen snapshot contains 43 records.

  22. v45Oct 1, 202641 records / 40 sources

    +1 records; updated Open releases. The frozen snapshot contains 41 records.

  23. v44Sep 30, 202640 records / 40 sources

    +1 records; updated Open releases, Open share. The frozen snapshot contains 40 records.

  24. v43Sep 29, 202639 records / 40 sources

    +2 records; updated Open releases, Developers, Open share. The frozen snapshot contains 39 records.

  25. v42Sep 28, 202637 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 37 records.

  26. v41Sep 27, 202636 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 36 records.

  27. v40Sep 26, 202635 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 35 records.

  28. v39Sep 25, 202634 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 34 records.

  29. v38Sep 24, 202633 records / 40 sources

    +1 records; updated Open releases, Developers. The frozen snapshot contains 33 records.

  30. v37Sep 23, 202632 records / 40 sources

    +1 records; updated Open releases, Developers, Open share. The frozen snapshot contains 32 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
v8
Coverage
2026-04/2026-08-28
Records
12
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-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

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

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

openai.comopenai.com5 sources / 5 records
GPT-5.6: Frontier intelligence that scales with your ambition1 supporting recordAccelerating life sciences research1 supporting recordIntroducing GPT-Live1 supporting recordThe new ChatGPT Images is here1 supporting recordIntroducing GPT-5.21 supporting record
the-decoder.comthe-decoder.com5 sources / 5 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 record
Ars Technicaarstechnica.com3 sources / 3 records
IBM's new Granite 4.2 models ride the wave of interest in local LLMs1 supporting recordGoogle announces Gemini 3.5 Transcribe for AI-powered speech-to-text1 supporting recordAnthropic says these topics are too dangerous to let its Fable 5 model talk about1 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
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 19 more publishers
x.aix.ai2 sources / 2 records
Introducing Grok 4.61 supporting recordGrok 4.6 on Amazon Bedrock1 supporting record
anthropic.comanthropic.com1 source / 1 record
Project Glasswing: Securing critical software for the AI era1 supporting record
artificialintelligencemadesimple.comartificialintelligencemadesimple.com1 source / 1 record
Anthropic's Claude Mythos Launch Is Built on Misinformation1 supporting record
autoclaw.z.aiautoclaw.z.ai1 source / 1 record
AutoClaw Models | GLM Model Support1 supporting record
blog.googleblog.google1 source / 1 record
Intelligent transcription with Gemini 3.5 Transcribe1 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
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
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
TechCrunchtechcrunch.com1 source / 1 record
techcrunch.com1 supporting record
technologyreview.comtechnologyreview.com1 source / 1 record
Inside OpenAI’s big play for science1 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
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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