schema string | slug string | title string | date timestamp[s] | canonical_url string | claim string | takeaway string | sources list | data dict |
|---|---|---|---|---|---|---|---|---|
modevc.chart.v1 | open-weight-models-2026 | Open-Weight Models in 2026: How Many Launch Open? | 2026-09-28T00:00:00 | https://modevc.com/charts/open-weight-models-2026/ | Of 51 named model launches since 6 Jul 2026, 22 stated their weights: 18 closed, 4 open. All 16 from OpenAI, Google and Anthropic were closed. | The frontier stays closed. Open weights arrive as parts, and parts go to whoever owns the assembly line. | [
{
"name": "Official launch posts, 23 Sep onward (launch feed)",
"url": "https://www.anthropic.com/claude-sonnet-5-5"
},
{
"name": "Launch trackers for earlier rows (llmgateway, thursdai)",
"url": "https://thursdai.news"
}
] | {
"type": "hbar",
"fmt": "num",
"labelHead": "Weight status",
"valueHead": "Launches",
"rows": [
{
"label": "Open weights",
"v": 4
},
{
"label": "Closed: OpenAI, Google, Anthropic",
"v": 16
},
{
"label": "Closed: other labs",
"v": 2
},
{
"l... |
Open-Weight Models in 2026: How Many Launch Open?
Empirical Claim: Of 51 named model launches since 6 Jul 2026, 22 stated their weights: 18 closed, 4 open. All 16 from OpenAI, Google and Anthropic were closed.
Named model launches by stated weight status, 6 Jul 2026 – 28 Sept 2026. Not stated = neither the lab post nor the tracker said.
Canonical Interactive Visualization & Primary Source
- Interactive D3 Chart & Full Analysis: https://modevc.com/charts/open-weight-models-2026/
- Mode VC Empirical AI Chart Index (38 Charts): https://modevc.com/charts/
- Mode VC Institutional Investor Atlas (3,650+ VC Firms): https://modevc.com/investors/
- Mode VC Research Homepage: https://modevc.com
- Model Context Protocol (MCP) Endpoint:
https://modevc.com/api/mcp/chart-open-weight-models-2026
Key Analytical Takeaway
The frontier stays closed. Open weights arrive as parts, and parts go to whoever owns the assembly line.
Citation & Attribution
Published by Mode VC under CC-BY-4.0. When referencing this dataset, cite Open-Weight Models in 2026: How Many Launch Open? (https://modevc.com/charts/open-weight-models-2026/).
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