---
id: "2026-11-04-ricursive-ripple-65b-preview-open-weights"
url: "https://postcutoff.com/e/2026-11-04-ricursive-ripple-65b-preview-open-weights/"
as_of: "2026-11-09T21:13:00+01:00"
date: "2026-11-04"
date_precision: day
category: open-source
importance: 3
confidence: medium
status: [Partly confirmed]
sources: 2
editor: human editor
human_review: null
version: "2026-11-05"
---

As of: 2026-11-09 21:13 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/e/2026-11-04-ricursive-ripple-65b-preview-open-weights/

# Ricursive (AlphaChip creators) releases Ripple-65B Preview, an Apache-2.0 dense 65B model trained from scratch for $32M

On Nov 4, 2026 Ricursive Intelligence, the chip-design AI startup of AlphaChip co-creators Anna Goldie and Azalia Mirhoseini, released Ripple-65B Preview under Apache 2.0: a dense 65B model trained from scratch on 12T tokens for about $32M, described as a general-purpose variant of the model behind its chip-design platform. Its own benchmarks claim the US open-weights coding lead; the company admits difficulty reproducing agent benchmarks.

## Key facts
- Dense, 80 layers, 12T training tokens; advertised 1M context (OpenRouter caps at 16,384 tokens)
- Vendor numbers: Terminal-Bench 2.1 80.5, SWE-bench Pro v2.0 Hard 79.1, DeepSWE 1.1 44.3 (Muse Spark Open 60.0), HMMT Feb 2026 90.5
- Model card gives different rival scores from the launch graphic (VentureBeat)
- OpenRouter (GMI Cloud): $0.20 input / $0.60 output / $0.05 cached per 1M tokens; weights at huggingface.co/ricursiveAI/Ripple-65B-Preview

## What happened

A rare US-made, permissively licensed open model trained from scratch by a startup, at a disclosed cost. Benchmarks are vendor-only so far; it is not on Artificial Analysis's open-weights list yet.

## Your AI and this story

- GPT-6 Astra (training cutoff April 2026): 188 days after its cutoff
- Claude Opus 5.5 (training cutoff June 2026): 127 days after its cutoff
- Gemini 4 Argon (training cutoff March 2026): 218 days after its cutoff
- Grok 4.7 (training cutoff May 2026): 157 days after its cutoff

## Sources

1. [Hugging Face: ricursiveAI/Ripple-65B-Preview](https://huggingface.co/ricursiveAI/Ripple-65B-Preview) (huggingface.co, code)
2. [VentureBeat: Ripple-65B Preview claims US open coding lead](https://venturebeat.com/technology/ex-googlers-new-apache-2-0-model-ripple-65b-preview-claims-the-u-s-open-coding-lead-on-two-major-benchmarks) (venturebeat.com, press)

## Changes

- 2026-11-05 (filed): Created

## Related

- People: [Anna Goldie](https://postcutoff.com/person/anna-goldie/), [Azalia Mirhoseini](https://postcutoff.com/person/azalia-mirhoseini/)