What is the difference between Bert-Nebulon Alpha and DeepSeek V4.1 Flash?

Bert-Nebulon Alpha is developed by OpenRouter while DeepSeek V4.1 Flash is developed by DeepSeek. You can compare their actual outputs across 1 challenges on Rival to see how they differ in practice.

Which is better, Bert-Nebulon Alpha or DeepSeek V4.1 Flash?

It depends on your use case. Bert-Nebulon Alpha and DeepSeek V4.1 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 1 challenges so you can judge which fits your needs best.

How can I compare Bert-Nebulon Alpha and DeepSeek V4.1 Flash on Rival?

This page shows a side-by-side comparison of Bert-Nebulon Alpha and DeepSeek V4.1 Flash across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Sep 2026

Bert-Nebulon AlphavsDeepSeek V4.1 Flash

DeepSeek V4.1 Flash is the newer model, released after Bert-Nebulon Alpha.

Bert-Nebulon Alpha and DeepSeek V4.1 Flash compared across 1 shared prompts
Spec	Bert-Nebulon Alpha	DeepSeek V4.1 Flash
Input price	—	$0.15/M tokens
Output price	—	$0.6/M tokens
Context window	—	1.0M tokens
Weights	—	Open
Free API (OpenRouter)	No	No
Released	Nov 2025	Sep 2026

Our Verdict

DeepSeek V4.1 Flash

Bert-Nebulon AlphaRunner-up

Not enough votes to call it. On the specs, DeepSeek V4.1 Flash has the edge: newer, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

Bert-Nebulon Alpha

Input

—

Output

—

DeepSeek V4.1 Flash

Input

$0.15

Output

$0.60

Where to run it

23 hosts, cheapest first

Bert-Nebulon Alpha

No hosts listed on OpenRouter.

DeepSeek V4.1 Flash23 hosts

HostInOutContextUptime

OpenInferencefp4$0.10 in$0.50 out1M99.5% up Wafer$0.12 in$0.60 out1M99.7% up Relacefp4$0.12 in$0.52 out1M99.9% up Morph$0.13 in$0.51 out1M98.4% up Sail Researchfp4$0.13 in$0.75 out1M99.9% up DeepInfrafp8$0.14 in$0.42 out1M99.7% up

17 more hosts

StreamLakefp8$0.15 in$0.60 out1M99.5% up CoreWeavefp8$0.20 in$0.65 out1M99.2% up Fireworks$0.22 in$0.66 out1M98.8% up Phala$0.28 in$1.10 out1M99.4% up GMI Cloudfp8$0.28 in$1.14 out1M99.6% up Novitafp8$0.28 in$1.14 out1M100% up Alibaba Cloud$0.30 in$1.20 out1M99.9% up AtlasCloudfp8$0.30 in$1.20 out1M99.7% up Basetenfp8$0.30 in$1.20 out1M99.4% up DeepSeek$0.30 in$1.20 out1M100% up DigitalOcean$0.30 in$1.20 out1M97.9% up Makora$0.30 in$1.20 out1M98.9% up Modal$0.30 in$1.20 out1M99.8% up SiliconFlowfp8$0.30 in$1.20 out1M99.8% up Together$0.30 in$1.20 out1M99.9% up Venicefp8$0.38 in$1.50 out1M96.7% up Parasailfp8degraded$0.30 in$1.20 out1M93% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

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More comparisons

Cost per 1M tokens

23 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Bert-Nebulon Alpha and DeepSeek V4.1 Flash?

Which is better, Bert-Nebulon Alpha or DeepSeek V4.1 Flash?

How can I compare Bert-Nebulon Alpha and DeepSeek V4.1 Flash on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Cost per 1M tokens

23 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Bert-Nebulon Alpha and DeepSeek V4.1 Flash?

Which is better, Bert-Nebulon Alpha or DeepSeek V4.1 Flash?

How can I compare Bert-Nebulon Alpha and DeepSeek V4.1 Flash on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages