IT AI Index
Index › IT operations and endpoint › APM › SigNoz vs Datadog
Application performance monitoring · September 2026 Edition

SigNoz vs Datadog

Zero of twelve models named SigNoz first on the direct prompt; one named Datadog. SigNoz was named by ten of the twelve models and Datadog by twelve and SigNoz carries 23 labels and Datadog 62, so the shares are not directly comparable.

SigNoz

accepted challenger

Named in six categories this edition.

Datadog

criticized challenger

Named in six categories this edition.

First-choice share13%11%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate4%37%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#3A position in a field of 10; printed, not drawn.
Labels2362A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, SigNoz reading right to left. Rank and label count are printed, not drawn.New Relic was named alongside these two in nine of the twelve direct answers. New Relic vs SigNoz · New Relic vs Datadog

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve 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 application performance monitoring page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
SigNozFirst choices, of twelve modelsDatadog
Direct013 against Datadog
Paraphrase132 against Datadog
Comparative08
Budget-constrained505 against Datadog
Scale-constrained013 against Datadog
Negative001 against SigNoz · 10 against Datadog
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.

The direct prompt

The plain question, one answer per model, grouped by where SigNoz and Datadog stood in it.

Datadog first, SigNoz not the choice

1 of 12 modelsSigNoz was named in the answer but not as the choice, or not at all.
Qwen 3.7 FlashDatadog alternatives: IBM Instana, New Relic, Sentry

Neither was the first choice, one was named

5 of 12 modelsThe answer put something else first and named one of the two as an alternative.
GPT-5.4 miniNew Relic alternatives: AppDynamics, Datadog, Dynatrace, Grafana Cloud
Perplexity SonarNew Relic alternatives: Datadog, Dynatrace, ManageEngine Applications Manager / OpManager Nexus
Grok 4.1 FastNew Relic alternatives: Datadog, ManageEngine Applications Manager, SolarWinds
Mistral SmallNew Relic alternatives: Datadog
GLM 4.7 FlashXNew Relic alternatives: AppDynamics, Datadog, Grafana/Tempo, OpenObserve, OpenTelemetry, SigNoz, SolarWinds Applications Manager

Neither was named

6 of 12 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5no first choice
Gemini 3.5 FlashNew Relic alternatives: Honeycomb, Sentry
DeepSeek V4 FlashNew Relic alternatives: ManageEngine Applications Manager
Llama 4 Maverickno first choice
Kimi K2New Relic alternatives: ManageEngine Applications Manager, SolarWinds
MiniMax M2.5ManageEngine Applications Manager, SolarWinds APM alternatives: Pandora FMS

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

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Datadog leads by four points.
Datadog15%#2 of 12
SigNoz11%#3 of 12
The full small business standing →
Mid-marketThe figures above
The order flips: SigNoz leads at mid-market.
SigNoz13%#2 of 10
Datadog11%#3 of 10
The full mid-market standing →
Enterprise
The order flips: Datadog leads at enterprise.
Datadog26%#2 of 8
SigNoz0%#– of 8
The full enterprise standing →

What the models said about SigNoz

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.

“Self-hosted open-source stacks (e.g., Prometheus + Jaeger + Grafana or self-hosted SigNoz)” Gemini 3.5 Flash · negative prompt · soft negative
“If you need a completely free solution and have some technical expertise, SigNoz or Grafana + Prometheus are excellent choices.” Mistral Small · budget prompt · first choice
“I'd strongly suggest SigNoz or the Prometheus + Grafana + Sentry combo — they're the most cost-effective at scale” DeepSeek V4 Flash · budget prompt · first choice

What the models said about Datadog

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.

“High Caution: Major Commercial APM Vendors ... Unpredictable pricing - Bills can triple or quadruple at scale” Kimi K2 · negative prompt · hard negative
“they are generally not recommended for mid-sized B2B companies” Gemini 3.5 Flash · paraphrase prompt · hard negative
“Datadog is a dominant SaaS-based observability platform that consolidates metrics, traces, logs, and security in a single, highly polished dashboard.” Gemini 3.5 Flash · comparative prompt · first choice
Also compared
New Relic vs SigNozNew Relic vs DatadogThe full APM standing

Comparisons are drawn for the top three products in each category. The output is the models' output; nothing here is a recommendation by the index.