Reka Flash 3 TPS calculator

Open weights Reka AI 21B parameters March 2025

Each card below is assessed against this model at the context length and minimum quality you choose. Speed is an estimate for a single request, calculated from the card's memory bandwidth and the size of the model once compressed.

Calculated for this model

241 cards that can run it

818 cards we hold specifications for

Smallest card that fits

Xeon Phi 7120P

16 GB · Q4_K_M · 10.7 tok/s

Fastest card

B200

161 tok/s · 180 GB

Which GPUs can run Reka Flash 3?

Set the inputs, read the answer

Context length tokens

A longer conversation needs more memory, which can push this model off smaller cards.

Minimum quality

Hides cards that would only fit the model by compressing it below this point.

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Card memory

Also show cards that cannot run it

241 cards match

Calculating

					Needs	Quantisation	Fit
161 tok/s 97–258 · low confidence	B200 NVIDIA	180 GB	8,000 GB/s	Jan 2024	23.2 GB	Q8_0	Comfortable
161 tok/s 97–258 · low confidence	B300 NVIDIA	288 GB	8,000 GB/s	Sep 2025	23.2 GB	Q8_0	Comfortable
129 tok/s 77–206 · low confidence	Radeon Instinct MI350X AMD	288 GB	8,190 GB/s	Jan 2025	23.2 GB	Q8_0	Comfortable
129 tok/s 77–206 · low confidence	Radeon Instinct MI355X AMD	288 GB	8,190 GB/s	Jan 2025	23.2 GB	Q8_0	Comfortable
103 tok/s 62–165 · low confidence	Radeon Instinct MI300 AMD	128 GB	6,550 GB/s	Jan 2023	23.2 GB	Q8_0	Comfortable
98.6 tok/s 59–158 · low confidence	H200 NVL NVIDIA	141 GB	4,890 GB/s	Nov 2024	23.2 GB	Q8_0	Comfortable
98.6 tok/s 59–158 · low confidence	H200 SXM 141 GB NVIDIA	141 GB	4,890 GB/s	Nov 2024	23.2 GB	Q8_0	Comfortable
94.4 tok/s 57–151 · low confidence	Radeon Instinct MI325X AMD	256 GB	6,000 GB/s	Oct 2024	23.2 GB	Q8_0	Comfortable
83.8 tok/s 50–134 · low confidence	Radeon Instinct MI300A AMD	128 GB	5,325 GB/s	Dec 2023	23.2 GB	Q8_0	Comfortable
83.8 tok/s 50–134 · low confidence	Radeon Instinct MI300X AMD	192 GB	5,325 GB/s	Dec 2023	23.2 GB	Q8_0	Comfortable
83.8 tok/s 50–134 · low confidence	Radeon Instinct MI308X AMD	192 GB	5,325 GB/s	Dec 2023	23.2 GB	Q8_0	Comfortable
79.5 tok/s 48–127 · low confidence	H100 NVL 94 GB NVIDIA	94 GB	3,940 GB/s	Mar 2023	23.2 GB	Q8_0	Comfortable
67.8 tok/s 41–108 · low confidence	H100 PCIe 96 GB NVIDIA	96 GB	3,360 GB/s	Mar 2023	23.2 GB	Q8_0	Comfortable
67.8 tok/s 41–108 · low confidence	H100 SXM5 80 GB NVIDIA	80 GB	3,360 GB/s	Oct 2022	23.2 GB	Q8_0	Comfortable
67.8 tok/s 41–108 · low confidence	H100 SXM5 94 GB NVIDIA	94 GB	3,360 GB/s	Mar 2023	23.2 GB	Q8_0	Comfortable
67.8 tok/s 41–108 · low confidence	H100 SXM5 96 GB NVIDIA	96 GB	3,360 GB/s	Mar 2023	23.2 GB	Q8_0	Comfortable
67.8 tok/s 41–108 · low confidence	H800 SXM5 NVIDIA	80 GB	3,360 GB/s	Mar 2023	23.2 GB	Q8_0	Comfortable
52.6 tok/s 32–84 · low confidence	Tesla V100 SXM2 16 GB NVIDIA	16 GB	1,130 GB/s	Nov 2019	13.4 GB	Q4_K_M	Tight
51.6 tok/s 31–83 · low confidence	Radeon Instinct MI250 AMD	128 GB	3,280 GB/s	Nov 2021	23.2 GB	Q8_0	Comfortable
51.6 tok/s 31–83 · low confidence	Radeon Instinct MI250X AMD	128 GB	3,280 GB/s	Nov 2021	23.2 GB	Q8_0	Comfortable
44.7 tok/s 27–72 · low confidence	GeForce RTX 5080 NVIDIA	16 GB	960 GB/s	Jan 2025	13.4 GB	Q4_K_M	Tight
43.0 tok/s 26–69 · low confidence	Data Center GPU Max 1550 Intel	128 GB	3,280 GB/s	Jan 2023	23.2 GB	Q8_0	Comfortable
42.1 tok/s 25–67 · low confidence	Data Center GPU Max Subsystem Intel	128 GB	3,210 GB/s	Jan 2023	23.2 GB	Q8_0	Comfortable
41.8 tok/s 25–67 · low confidence	Tesla V100 DGXS 16 GB NVIDIA	16 GB	897 GB/s	Mar 2018	13.4 GB	Q4_K_M	Tight
41.8 tok/s 25–67 · low confidence	Tesla V100 PCIe 16 GB NVIDIA	16 GB	897 GB/s	Jun 2017	13.4 GB	Q4_K_M	Tight

Speeds are estimates for a single request — one conversation at a time — calculated from memory bandwidth, model size and quantisation. Real throughput varies with the inference runtime and its version. Figures published by hardware vendors measure many simultaneous requests and are much higher.

On record

Full specification

Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.

Origin

Who built this model, where, and when it was published.

Organisation: Reka AI
Organisation type: Industry
Country: United States of America
Published: 10 March 2025

What it does

The problem areas the model was built for. A model can carry several of each.

Domain: Multimodal, Language, Vision, Video, Speech
Task: Chat, Code generation, Language modeling/generation, Quantitative reasoning, Question answering, Character recognition (OCR), Visual question answering, Video description, Speech recognition (ASR)

Size

How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.

Parameters: 21B
Training data: tokens

Availability

Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.

Weights: Open — downloadable
Model access: Open weights (unrestricted)
Training code: Unreleased
Hugging Face: RekaAI

How it is classified

Labels the source dataset applies when tracking notable models, and how confident it is in the entry.

Record confidence: Confident

Sources

Where this record came from and when it was last checked.

Reference: Reasoning with Reka Flash 3
Last updated: 28 November 2025

The extremes

The ten fastest GPUs that run Reka Flash 3

Ranked by estimated tokens per second, newest card first where speeds tie. Because generation is bound by memory bandwidth, this ordering follows bandwidth rather than any gaming benchmark.

The smallest GPUs that still run Reka Flash 3

The cheapest route in, by memory capacity. A tight fit runs the model but leaves nothing spare for a longer conversation.

What the numbers mean

What you need to run it

Minimum card

Xeon Phi 7120P

Memory needed

13.4 GB

Fastest

161 tok/s

Reka Flash 3 reaches a parameter count of 21B. That lands in the range a serious desktop card can handle once the weights are compressed. The number of cards we track that can run it: 241.

The least hardware that works is Xeon Phi 7120P, with a memory capacity of 16 GB, running it at a compression of Q4_K_M and producing around 10.7 tokens per second.

The fastest we calculate for it is B200, generating roughly 161 tokens per second on the strength of a memory bandwidth of 8,000 GB/s.

About this model

Reka Flash 3 was published by Reka AI, in the country recorded as United States of America, during March 2025. It comes out of an organisation categorised as industry.

It works in the domain of Multimodal, Language, Vision, Video, Speech, and is recorded as performing the task of chat, Code generation, Language modeling/generation, Quantitative reasoning, Question answering, Character recognition (OCR), Visual question answering, Video description, Speech recognition (ASR).

The weights are published, so it can be downloaded and run on your own hardware indefinitely, offline, with no account attached. On Hugging Face it is published under the organisation RekaAI.

How fast it runs, and why

The median result is around 20.9 tokens per second. Producing text faster than most people read it: 198 of them.

It is a dense model, so every parameter is read for every token produced. That makes speed track memory bandwidth almost exactly — a card with twice the bandwidth generates roughly twice as fast.

Without the attention layout on record, the memory column is an approximation. It is close enough to choose hardware by, and least reliable at long context.

Step by step

How to choose a GPU for Reka Flash 3

The table above has already assessed every card we hold specifications for against this model. Getting to your answer takes six steps.

01

Start from the memory column

Start from what it actually needs, which is the requirement of Reka Flash 3, needing around 13.4 GB at a compression of Q4_K_M. That figure, not the headline performance of a card, is what decides whether it runs.
02

Decide how long your conversations run

The conversation occupies memory too, and grows as it goes. Set the slider to the length you expect, because at long context a card that handles short questions easily can be dropped by Reka Flash 3.
03

Choose how far you will compress it

Compression is what makes a model fit smaller cards, at some cost in accuracy, reaching a compression of Q4_K_M on the smallest card that fits. Setting a minimum quality drops the cards that only manage it by squeezing further than you would want, and holds the comparison at one level.
04

Rank by throughput rather than spec sheet

Ranking by tokens per second follows memory bandwidth rather than core counts, for Reka Flash 3. It will not match a gaming ordering, because generation is bound by memory bandwidth. The card topping the list is B200, at 161 tok/s.
05

Look at the headroom, not just the fit

Tight means it loads and works with no room to raise the context later, in the case of Reka Flash 3. Comfortable means you can grow the context later. That difference matters more than a few tokens per second, so buy for comfortable if you expect to.
06

Open the card you have settled on

Each card page repeats this sweep for every model we hold, answering what else the hardware is good for beyond Reka Flash 3.

Answers

Reka Flash 3 — common questions

Reka Flash 3— how accurate are these speed estimates?

They are calculated from specifications rather than measured, and each carries a range. One example: 97–258 tok/s on B200. The same model and card vary by thirty to fifty per cent depending on the inference software and its version.

Reka Flash 3— what GPU do I need to run it?

The smallest card in our catalogue that holds it is Xeon Phi 7120P, with a memory capacity of 16 GB. It runs the model at a compression of Q4_K_M using about 13.4 GB, and produces roughly 10.7 tokens per second. The number of cards able to run it in total: 241.

Reka Flash 3— how fast is it on a GPU?

It depends on the card. The quickest we calculate is B200, at about 161 tokens per second; the slowest that still runs it manages considerably less. Reading speed is around ten tokens per second, and the number of cards clearing that: 198.

Reka Flash 3— how much VRAM does it need?

It needs about 13.4 GB at a compression of Q4_K_M, which is what the smallest card that runs it uses. Less compression needs more: the figures in the memory column above are recalculated for each card, because each one holds the least-compressed version it can.

Reka Flash 3— can I run it on a GPU holding 16 GB?

Yes. The card Tesla V100 SXM2 16 GB, holding 16 GB, runs it at a compression of Q4_K_M, using about 13.4 GB and generating roughly 52.6 tokens per second. The fit is tight.

Reka Flash 3— can I run it on a GPU holding 24 GB?

Yes. The card GeForce RTX 5090 D V2, holding 24 GB, runs it at a compression of Q6_K, using about 18.3 GB and generating roughly 39.3 tokens per second. The fit is tight.

Reka Flash 3— is it open source?

Its weights are published, so it can be downloaded and run on your own hardware. Note that open weights is not the same as open source in the full sense — it says nothing about the training data, the training code, or the commercial terms attached.

Reka Flash 3— how many parameters does it have?

It has a parameter count of 21B. That figure is the total, and it is what decides how much memory the model needs — roughly half a gigabyte per billion at the compression most people use.

Reka Flash 3— who created it?

It was published by Reka AI, based in United States of America, an organisation categorised as industry.

Reka Flash 3— when was it released?

It was published in March 2025.

Reka Flash 3— what is it used for?

It works in the domain of Multimodal, Language, Vision, Video, Speech, and is recorded as handling the task of chat, Code generation, Language modeling/generation, Quantitative reasoning, Question answering, Character recognition (OCR), Visual question answering, Video description, Speech recognition (ASR). These are the areas it was designed around; they describe intent rather than a hard boundary.

Reka Flash 3— where can I download it?

Its weights are published on Hugging Face, under the organisation RekaAI. We do not host model files — this site calculates what hardware is needed to run them.

Reka Flash 3— can I run it if it does not fit in my GPU?

It can be split between the card and system memory, but it generates painfully slowly that way. The nearest miss we calculate falls short by 2.6 GB. Every figure here assumes the whole model is resident on the card.

Reka Flash 3— would two GPUs run it faster?

Capacity adds across cards; throughput does not. The number of cards already holding it on their own: 241. So a second card is rarely the answer here.

Reka Flash 3— why does the quantisation differ between cards?

A larger card holds a more accurate copy. The number of compression levels used across the cards that run it: 4. Bigger cards get the more accurate version, and the quality floor above pins the comparison to one level.

Source

Original publication

Record last updated 28 November 2025

The other direction

Looking at it from the other side?

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