Research report 03 / Release momentum
Open Model Momentum
Verified open and disclosed-license model releases, developer activity, and release cadence.
Archived snapshotv1Aug 27, 2026
Data status11 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 27, 2026
Version ledger
Frozen public editions
Each edition preserves the records, method, sources, and downloads available at publication time.
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
- v1
- Coverage
- 2026-04/2026-08-26
- Records
- 11
- Fields
- 6
- Updated
Measurement technique
How to read this report
- 01Open status requires an explicit open, community, or named open license/availability disclosure.
- 02Momentum currently measures verified release cadence; download-growth snapshots will be added prospectively rather than reconstructed.
- 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.com6 sources / 6 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 recordChatGPT is now a partner for your most ambitious work1 supporting record
Ars Technicaarstechnica.com3 sources / 3 records
campustechnology.comcampustechnology.com3 sources / 3 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 recordNvidia Releases Nemotron 3.5 Lightning Open AI Model -- Campus Technology1 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
the-decoder.comthe-decoder.com3 sources / 3 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 record