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Ternary Bonsai: Top Intelligence at 1.58 Bits
- ericb 6mo agoThis is pretty cool! I would love to see an even larger models shrunk down. If you got that into a couple gigs--what could you stuff into 20 gigs?
- wmf 6mo agoYet again they're comparing against unquantized versions of other models. They would probably still win but by a much smaller size margin.
- Dumbledumb 6mo agoWouldnt the margin be higher? All other models being moved from unquantized to quantized would lower their performance, while bonsai stays. I get what you see if it was in regards to score/modelsize, but not for absolute performance
- SwellJoe 6mo agoThe metric they're selling this on is intelligence per byte, rather than total intelligence. So, if they used the quantized competing models, the intelligence per byte gap shrinks, because most models hold up very well down to 6-bit quantization, and 4-bit is usually still pretty good, though intelligence definitely tends to fall below 6-bit. Nonetheless, the Prism Bonsai models are impressive for their size. Where it falls apart is with knowledge. It has good prose/logic for a tiny model, and it's fast even on modest hardware, but it hallucinates a lot. Which makes sense. You can't fit the world's data in a couple of gigabytes. But, as a base model for fine-tuning for use cases where size matters, it's probably a great choice.
- happygoose 6mo agounfortunately, there doesn't seem to be a clear way to fine-tune these models yet. excited for when that happens though.
- mchusma 6mo agoEver since I saw the first one of these one-bit models made by Microsoft, I thought this was a fascinating route. I assume that in practice, this is less helpful than it seems, just because there's every economic incentive in the world for the big AI labs to produce small, powerful, fast models. None of them seem to be using this technique, so it's interesting, but I suspect it's not quite working. I also have yet to see any of these at a larger scale. For example, can you try one of these at 100 billion parameters?
- yodon 6mo agoSo excited to see this - the big advantage of 1.58 bits is there are no multiplications at inference time, so you can run them on radically simpler and cheaper hardware.
- Animats 6mo agoAt 4 bits, you could just have a hard-wired table lookup. Two 4 bit values in, 256 entry table. You can have saturating arithmetic and a post-processing function for free. Somebody must be building hardware like that.
- Taniwha 6mo agoand so you can at 1-bit too, and the hardware will be even smaller and cheaper
- AlotOfReading 6mo agoA LUT is pretty wasteful. You only have a one bit significand, so the mantissa and sign bits are boolean binops, and the exponent is a 2 bit adder.
- londons_explore 6mo agoLow level software engineers use look up tables. Hardware engineers realise that a compiler will almost always find some combination of gates which is smaller/faster than the contents of any table.
- Animats 6mo agoThis makes sense. The 1-bit model implies needing 2x as many neurons, because you need an extra level to invert. But the ternary model still has a sign, just really low resolution. (I've been reading the MMLU-Redux questions for electrical engineering. They're very funny. Fifty years ago they might have been relevant. The references to the Intel 8085 date this to the mid-1970s. Moving coil meters were still a big thing back then. Ward-Leonard drives still drove some elevators and naval guns. This is supposed to be the hand-curated version of the questions. Where do they get this stuff? Old exams?) [1] https://github.com/aryopg/mmlu-redux/blob/main/outputs/multi_expert_helm/electrical_engineering.csv https://github.com/aryopg/mmlu-redux/blob/main/outputs/multi...
- armanj 6mo agoI did a quick benchmark & compared it with Qwen3.5: https://github.com/ArmanJR/PrismML-Bonsai-vs-Qwen3.5-Benchmark https://github.com/ArmanJR/PrismML-Bonsai-vs-Qwen3.5-Benchma... in my results, accuracy-wise Ternary-Bonsai-8B is on par with Qwen3.5-4B. But in accuracy-per-byte, bonsai is the clear winner: => Ternary-Bonsai-1.7B achieved 65.1% from 462 MiB, beating Qwen3.5-0.8B by 12 points while being ~5% smaller on disk. => Ternary-Bonsai-4B is the accuracy-per-byte winner above 1 GiB. 83.0% from only 1.1 GiB, within 2 points of Qwen3.5-4B at 40% of the weight size. they show strong promise on edge devices and where disk space is limited. I think this lab is worth watching.
- WatchDog 6mo agoAll of their benchmarks are against 16 bit models right? Why aren't they comparing to 2/3/4 bit quants?
- himata4113 6mo agolooked at quant versions of these models and they all outperform it so I guess it just doesn't look as good.
- mstr_anderson 6mo ago[flagged]
- goofy_lemur 6mo ago> On M4 Pro, Ternary Bonsai 8B runs at 82 toks/sec, roughly 5x faster than a 16-bit 8B model Wow, if this is true, I am extremely impressed and excited! I wonder about kv cache how much better it is as well!
- TimorousBestie 6mo agoThis model tends to be annoyingly literal. An example from earlier today: >> What are some names like Llewelyn? > Some names like Llewelyn are Llewelyn, Llewelyn, Llewelyn, (repeats several times), and Llewelyn.
- freakynit 6mo agoOpen access for next 5 hours (Ternary-Bonsai-8B-Q2_0.gguf, running on RTX 3090) or until server crashes or the this spot instance gets taken away :) => https://uklkyvetsjf7qt-80.proxy.runpod.net https://uklkyvetsjf7qt-80.proxy.runpod.net ./build/bin/llama-server \ -m ../Ternary-Bonsai-8B-Q2_0.gguf \ -ngl 999 \ --flash-attn on \ --host 0.0.0.0 \ --port 80 \ --ctx-size 65500 \ --batch-size 512 \ --ubatch-size 512 \ --parallel 5 \ --cont-batching \ --threads 8 \ --threads-batch 8 \ --cache-type-k q8_0 \ --cache-type-v q8_0 \ --log-colors on # llama.cpp is forked one: https://github.com/PrismML-Eng/llama.cpp.git https://github.com/PrismML-Eng/llama.cpp.git # The server can serve 5 parallel request, with each request capped at around `13K` tokens... # A bit of of benchmarks I did: # 1. Input: 1001 tokens, ttfs: 0.3 second, outputs: 1618 tokens ~140t/s # 2. Input: 9708 tokens, ttfs: 2.4 second, outputs: 2562 tokens at ~106t/s # Vram usage was consistently at ~7GiB. > https://huggingface.co/prism-ml/Ternary-Bonsai-8B-gguf/resolve/main/Ternary-Bonsai-8B-Q2_0.gguf https://huggingface.co/prism-ml/Ternary-Bonsai-8B-gguf/resol...
- sigmoid10 6mo agoThanks a lot, I was about to clone their llama.cpp branch and do the same. Some more interesting tidbits from my go-to tests: * Fails the car wash test (basic logic seems to be weak in general) * Fails simple watch face generation in html/css. * Fails the "how many Rs in raspberry test" (not enough cross-token training data), but will funnily assume you may be talking about Indian Rupees and tell you a lot about raspberry prices in India without being asked. Possible Indian training data unbalance? * Flat out refuses to talk about Tiananmen square when pushed directly - despite being from a US company. Again, perhaps they are exposed to some censored training data? Anyways, when slowly built up along the conversation by asking about locations and histories, it will eventually tell you about the massacre, so the censorship bias seems weak in general. Also has no problem immediately talking about anything Gaza/Israel/US or other sensitive topics. * Happily tells you how to synthesize RDX with list of ingredients and chemical process step by step. At least it warns you that it is highly dangerous and legally controlled in the US.
- deleted 6mo ago[deleted]
- usernametaken29 6mo agoI think it’s exciting to live in this quirky universe where we have simply accepted our hardware does weird and nonlinear stuff and that powers some math and that’s why your transform function works. Many people thought quantisation is not viable to the extent we see, but we clearly underestimated the effect of hardware on the actual non linearity of the models. Cool to see this pushed to the limits.
- freakynit 6mo agoNature has already set an absurdly high bar. The human brain runs on roughly 20 watts, yet delivers a level of intelligence we still can't clearly define, let alone replicate. Nothing we've built comes close... either in capability or efficiency. We're still very early in understanding what "intelligence" even means, much less engineering it. so, we have a long way to go, and push.
- sbierwagen 6mo agoDepending on how you convert synapse count to parameters, the brain also has something like a thousand trillion parameters. In that light it's pretty darn surprising that an artificial neural network can produce anything like coherent text.
- postalrat 5mo agoBiological brains need to run a self reproducing machine. Still alien tech we are hoping to one day understand.
- freakynit 6mo agoIt indeed is. We now have models less than 100M params producing pretty coherent, and somewhat relevant text to give input. That is indeed impressive. I believe the answer lies in how "quickly" (and how?) we are able to learn, and then generalize those learnings as well. As of now, these models need millions (at least) examples to learn, and are still not capable of generalizing the learnings to other domains. Human brains hardly need a few, and then, they generalize those pretty well.
- gbgarbeb 6mo agoWhen do we get 1100B Kimi K2.6 in 160 GB of memory at 1.125 bpw?
- est 6mo agoinstalled since last HN post. So Bonsai (1-bit) and Ternary-Bonsai are different? Can it be run on browsers with WASM/WebGPU?
- xenova 5mo agoyep! :) https://huggingface.co/spaces/webml-community/bonsai-ternary-webgpu https://huggingface.co/spaces/webml-community/bonsai-ternary...
- syntex 6mo agohallucinates in pretty much every answer
- zkmon 6mo agoThe raw math: File size is hard-linked to parameter count and quant type. Intelligence is sort of linked to parameter count. Parameter count dictates the hardware requirement. What't left for the labs is, compressing more intelligence into lower parameter count, or packing more of specialized intelligence or buying up more hardware. Those are the only 3 directions all models/labs are heading.
- londons_explore 6mo agoHow is the research on training these models directly in their quantized state going? That'll be the real game changer.
- sigmoid10 6mo agoThe original BitNet was natively trained on 1.58 bits. PrismML has not released any actual info on how they trained, but since they are based on Qwen, there was certainly some downstream quantization involved.
- usrusr 6mo agoIs it just quantization or is it also rearranging the weights to get clusters with (almost) the same factors? If it's the latter it would very much be training in full precision (but also hardly any precision lost by the compression). Unfortunately my mental model doesn't contain anything to even guess if that's possible or not, my AI times were at the falling flank of symbolic. Funny how one bit models feel a bit like approaching an approximation of symbolic again (until you read about the grouped scale factors and then the illusion is gone) One thought that suggests rearranging is not involved,a thought that does not require any knowledge at all: if it did involve rearranging, someone would certainly have added some order by scale factor tricks with linear interpolation by address offset to lose even less precision.
- Reubend 5mo agoIt's not just quantization. I verified that if you naïvely quantize to 1 bit from the original Qwen model (and set grouped scale factors based on what the original model's weights were like), it just spits out gibberish. > One thought that suggests rearranging is not involved,a thought that does not require any knowledge at all: if it did involve rearranging, someone would certainly have added some order by scale factor tricks with linear interpolation by address offset to lose even less precision. Can you elaborate?
- cubefox 6mo agoThis is the only paper which really does this: https://proceedings.neurips.cc/paper_files/paper/2024/hash/718a3c5cf135894db6e718725f52ef9a-Abstract-Conference.html https://proceedings.neurips.cc/paper_files/paper/2024/hash/7... They train directly in the 1 bit domain, without any floating point weights. They don't use the classical Newton-Leibniz derivative (which operates on approximations of real numbers) for gradient descent / backpropagation. Instead they invented a binary version called "Boolean variation". I don't know why this paper didn't get more attention.
- swiftcoder 6mo agoDoes this sort of thing scale? Would a 30B or higher model see similar performance/memory gains under this scheme?
- philipp-gayret 6mo agoNice work, I applied my own benchmarking tools to it. On my single NVidia Spark I get 173.3 tokens/s on baseline config, 372.4 tokens/s with added tuning/parallel options. Most notably time to first token is incredibly low, similar models take ~6000ms. Bonsai was 70ms (almost 100x reduction) with flash attention Having said all that, gemma4-e4b-q4km did much better and I can achieve 70% of the tokens/s on the same machine, specifically in context of tool use and for running agents.
- mungoman2 6mo agoThis is very interesting and exciting, but IMHO the comparisons read as a bit disingenuous with the other models at 16 bit weights. The 16 bit releases of the others models are not optimized for size, making it difficult to take the comparison seriously. Would be interesting to see a comparison to quantized versions of the other models. If this model beats the others also in a fair comparison it gives more credibility to it.
- tiagod 6mo ago> Fig IV: Throughput (toks/sec) and energy consumption (mWh/tok) across various hardware platforms. I don't see any mWh/token figures in that chart.
- heltale 5mo agoThis reminds me of DeepGrove AI’s ternary weight model: https://github.com/deepgrove-ai/Bonsai https://github.com/deepgrove-ai/Bonsai Is there a particular difference that I might be missing here?