Corelight Open NDR vs Stellar Cyber Open XDR
Zero of fourteen models named Corelight Open NDR first on the direct prompt; zero named Stellar Cyber Open XDR. Corelight Open NDR was named by twelve of the fourteen models and Stellar Cyber Open XDR by twelve and Corelight Open NDR carries 33 labels and Stellar Cyber Open XDR 18, so the shares are not directly comparable.
Named in one category this edition.
Named in four categories this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the network detection and response page.
By framing
Corelight Open NDRFirst choices, of fourteen modelsStellar Cyber Open XDR
Across every category in the November 2026 Edition, Corelight Open NDR and Stellar Cyber Open XDR were named in the same answer twenty-four times, of the 111 answers naming Corelight Open NDR and the 102 naming Stellar Cyber Open XDR. In those answers Stellar Cyber Open XDR took the first choice five times and Corelight Open NDR two.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | ||||
| GPT-5.4 mini | | |||||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | | |||
| Grok 4.20 | | | | | | |
| Mistral Small | | | ||||
| DeepSeek V4 Flash | | | ||||
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | | ||||
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | |||||
| MiniMax M2.5 | | | ||||
| GPT-6 Luna | | | | |||
| Muse Glimmer 30B | | |
Corelight Open NDR Stellar Cyber Open XDR first choice named as an alternative argued againstblank: not namedEach cell is one answer, Corelight Open NDR on the left and Stellar Cyber Open XDR on the right.The direct prompt
Neither was the first choice, one was named
6 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
8 of 14 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Stellar Cyber Open XDR7%#3 of 15Corelight Open NDR0%#11 of 15Corelight Open NDR2%#4 of 10Stellar Cyber Open XDR2%#7 of 10Corelight Open NDR4%#5 of 8Stellar Cyber Open XDR2%#– of 8What the models said about Corelight Open NDR
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“One reviewer cited limits on custom alerting and potentially significant costs for some cloud monitoring setups.” GPT-6 Luna · negative prompt · soft negative
“over pricier alternatives like Vectra AI, Darktrace, ExtraHop Reveal(x), or Corelight” Grok 4.20 · budget prompt · soft negative
“Originally IDS-focused; evaluate if you need full response capabilities” Kimi K2 · direct prompt · soft negative
“The best NDR platform for a company with a limited budget is Corelight or Cisco Secure Network Analytics.” Llama 4 Maverick · budget prompt · first choice
“Evidence- and hunting-oriented, built around Zeek network data... Threat-hunting teams that value detailed investigation, customization, and data portability.” GPT-6 Luna · comparative prompt · alternative
“If budget = $0 for software, build on Zeek/Suricata-based open NDR such as Corelight Open NDR, accepting higher operational cost.” Muse Glimmer 30B · budget prompt · alternative
What the models said about Stellar Cyber Open XDR
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.
“Evaluate Stellar Cyber, though it is better viewed as Open XDR than pure NDR.” Perplexity Sonar · comparative prompt · soft negative
“Stellar Cyber is recommended for enterprises with limited staff and budget” Claude Haiku 4.5 · budget prompt · first choice
“Stellar Cyber Open XDR is the most commonly recommended budget-conscious commercial platform for SMBs 1-50 employees.” Muse Glimmer 30B · budget prompt · alternative
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.