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Open-weight model · Text generation

IdeaLens

by Rishanth Rajendhran rishanthrajendhran/IdeaLens

IdeaLens is an open-weight model for text generation from Rishanth Rajendhran, released under other. It has 32.9B parameters and a 262,144-token context. At 16-bit it needs about 79 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 55 downloads a month.

IdeaLens detects who came up with the ideas in a document, rather than who wrote its words.

Parameters32.9B
Context262,144
Weights68.9 GB
Licenseother
AccessOpen weights
Monthly Downloads55

Runs On

What it takes to serve IdeaLens (32.9B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 65.8 GB 79.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 32.9 GB 39.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 16.5 GB 19.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 6, 2026.

IdeaLens on every accelerator the SAVRN Index prices, at every precision

Model Card

IdeaLens detects who came up with the ideas in a document, rather than who wrote its words. It reads a role-labelled outline of the document (an ordered list of items, each giving one idea and the discourse role it plays, such as Central Development or Open Question) and returns P(human), the probability that the ideas are human. IdeaLens is nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16 fine-tuned with LoRA (rank 64) on the outlines of 1M English web documents (WildOutlines). The training outlines were paraphrased to remove the documents' wording, so the model has to fit its labels through the ideas. Try it in your browser: the IdeaLens & ProseLens demo scores your own text with both…

Excerpt from the card by Rishanth Rajendhran, licensed other.

Configuration

Architecture
NemotronHForCausalLM
Context length (tokens)
262,144
Layers
52
Hidden size
2,688
Feed-forward size
1,856
Attention heads
32
Key/value heads
2
Head dimension
128
Vocabulary size
131,072
Routed experts
128
Experts active per token
6
RoPE base
10,000
Model type
nemotron_h

Identity and Version

Repository
rishanthrajendhran/IdeaLens
Publisher
Rishanth Rajendhran
Task
Text generation
Modality
Text
Library
transformers
Parameters
32.9B parameters
Languages
en
Revision
cc2184624621966e6d95c4527f897085c9683a94
First published
2026-08-31
Last updated
2026-10-06

Files and Weights

27 files, 68.9 GB in total. The weights are 15 files totalling 68.9 GB in safetensors.

Weights15 files · 68.9 GB
Configuration6 files · 629.6 KB
Tokenizer2 files · 17.3 MB
Documentation2 files · 19.9 KB
Other1 file · 9.9 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
adapter/adapter_model.safetensorsWeights3.1 GB 9120dadd5535
model-00001-of-00014.safetensorsWeights5.0 GB 6150faa7cecd
model-00002-of-00014.safetensorsWeights5.0 GB 5e80e93c03c0
model-00003-of-00014.safetensorsWeights5.0 GB 53cb6f672bbe
model-00004-of-00014.safetensorsWeights5.0 GB 684b15096863
model-00005-of-00014.safetensorsWeights5.0 GB eb1f85f6591b
model-00006-of-00014.safetensorsWeights5.0 GB e6bfb80b69cf
model-00007-of-00014.safetensorsWeights5.0 GB d8b4c6607212
model-00008-of-00014.safetensorsWeights5.0 GB bc1ff6b0fe72
model-00009-of-00014.safetensorsWeights5.0 GB 6cb18b48105a
model-00010-of-00014.safetensorsWeights5.0 GB fa7c0e8fbd39
model-00011-of-00014.safetensorsWeights5.0 GB 87d30e427f73
model-00012-of-00014.safetensorsWeights5.0 GB 0c2799e5aa64
model-00013-of-00014.safetensorsWeights3.2 GB 6c46b1c2302b
model-00014-of-00014.safetensorsWeights2.7 GB 64577b275ca4
adapter/adapter_config.jsonConfiguration982 B —
config.jsonConfiguration2.4 KB —
load_adapter.pyConfiguration5.1 KB —
model.safetensors.index.jsonConfiguration612.2 KB —
special_tokens_map.jsonConfiguration563 B —
thresholds.jsonConfiguration8.4 KB —
LICENSEDocumentation2.7 KB —
README.mdDocumentation17.3 KB —
chat_template.jinjaOther9.9 KB —
.gitattributesRepository1.6 KB —
tokenizer.jsonTokenizer17.1 MB 623c34567aeb
tokenizer_config.jsonTokenizer177.2 KB —

License and Download

License
other
Access
Open weights, no gate
Download size
68.9 GB
Download from Rishanth Rajendhran

Released by Rishanth Rajendhran through its official repository on Hugging Face.

Built From

  • Derived from nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16
  • Described by arXiv:2610.06778
  • Trained on (disclosed) rishanthrajendhran/WildOutlines

Memory Requirements

PrecisionWeights in memory
As published68.9 GB
16-bit65.8 GB
8-bit32.9 GB
4-bit16.5 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About IdeaLens

How much GPU memory does IdeaLens need?

About 79 GB at 16-bit and 19.7 GB at 4-bit: the weights (32.9B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run IdeaLens on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

What license is IdeaLens released under?

other, as its publisher declares it. Read the license text before commercial use.

What is IdeaLens's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

Similar Models

Model · Text generation

IdeaLens-NoParaphrase

Rishanth Rajendhran

IdeaLens-NoParaphrase is an ablation of IdeaLens: the same backbone, documents and labels, trained on the outlines as extracted, without the paraphrasing step that removes the documents' wording. It reads a role-labelled outline and returns P(human), the probability that the document's ideas are human. It is nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16 fine-tuned with LoRA (rank 64) on the outlines of 1M English web documents (WildOutlines, outline field). Try it in your browser: the IdeaLens & ProseLens demo scores your own text with both detectors, no installation or keys needed. This model is not reported in the paper. It is released for comparison with IdeaLens. Scoring a document…

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ProseLens

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ProseLens detects who wrote the words of a document. It is IdeaLens's counterpart in the paper: the same backbone, training documents and labels, but it reads the raw document text instead of an outline, so it learns word-level provenance. It returns P(human), the probability that the document was written by a person. ProseLens is nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16 fine-tuned with LoRA (rank 64) on 1M English web documents (WildOutlines). Try it in your browser: the IdeaLens & ProseLens demo scores your own text with both detectors, no installation or keys needed. From the paper: ProseLens is accurate when a document's ideas and words come from the same source (99.1%), but…

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