This guide is for security teams replacing Splunk Enterprise Security as their SIEM. If you use Splunk for application logs, metrics and uptime, you want an observability tool instead, such as New Relic or OpenObserve, and a different list. For security, the seven Splunk alternatives worth a shortlist in 2026 are Microsoft Sentinel, Google Security Operations, Elastic Security, CrowdStrike Falcon Next-Gen SIEM, Sumo Logic Cloud SIEM, Rapid7 Incident Command and SenseOn. The right one depends on the estate you already run and how you want to pay.
Every product fact below comes from the vendor's own documentation or pricing page, read on 23 September 2026. We have not invented prices: where a vendor publishes a figure, we quote it with its region and date; where it does not, we say so.
Splunk alternatives at a glance
| Option | Best for | Pricing model | Deployment | Splunk migration help (vendor docs) |
|---|---|---|---|---|
| Microsoft Sentinel | Microsoft 365 and Azure estates | Per GB ingested, or daily commitment tiers | SaaS on Azure | SIEM migration experience maps Splunk detections |
| Google Security Operations | Long retention and large volumes | Based on ingestion volume; 12 months hot retention included | SaaS on Google Cloud | Not covered in the pages we read |
| Elastic Security | Self-hosting, or low per-GB serverless rates | Serverless per GB ingested and retained; hosted by resources; self-managed licence | Serverless, hosted or self-managed | Automatic Migration for Splunk rules and dashboards |
| CrowdStrike Falcon Next-Gen SIEM | Existing Falcon customers | Falcon module data without extra ingestion charges; other terms by quote | Cloud; LogScale also self-hosted | Not covered in the pages we read |
| Sumo Logic Cloud SIEM | Teams wanting ingest-free pricing | Flex pricing: $0 ingest, pay for data scanned | SaaS | Not covered in the pages we read |
| Rapid7 Incident Command | Mid-sized teams wanting predictable cost | Asset-based | Cloud | Not covered in the pages we read |
| SenseOn | Replacing SIEM data costs and triage work | Flex Intelligence Credits, no per-GB ingestion charge | SaaS, runs alongside existing tools | Parallel run alongside Splunk |
"Not covered in the pages we read" means exactly that. Ask the vendor for its Splunk migration tooling before you rule it out.
Why security teams look for a Splunk alternative
Splunk publishes four pricing models: ingest ("based on gigabytes of data ingested"), workload (compute and storage for search), entity (hosts and devices monitored) and activity (ingest plus search). None is published as a list price; all need a quote. Splunk Enterprise Security now comes in Essentials and Premier editions, with SOAR and UEBA in Premier. Splunk is part of Cisco.
The common reasons to move are cost that rises with data volume, the specialist effort needed to write and tune SPL detections, and renewal timing. None of these makes Splunk a bad product. They make it a product that suits teams with the budget and people to run it well.
The seven alternatives
1. Microsoft Sentinel
What it is. Microsoft's cloud SIEM, moving into the Microsoft Defender portal. Microsoft says that after 31 March 2027 Sentinel will be available only there.
Pricing. Per GB ingested into the analytics tier, or a daily commitment tier from 100 GB. Microsoft's billing page also lists a lower-cost data lake tier, 90 days of free retention, and free sources such as Office 365 audit logs and Defender alerts. At Microsoft's East US list price on 23 September 2026, pay-as-you-go was $4.30 per GB. Our Microsoft Sentinel pricing guide works through example bills.
Splunk migration. The SIEM migration experience "analyzes Splunk and QRadar detections, including custom detections, and recommends best-fit Microsoft Sentinel detections and Defender XDR native detections". It needs Security Copilot enabled but, per Microsoft, does not consume Security Compute Units. It does not install connectors or enable rules for you.
Watch for. The bill is still volume-driven, and playbooks, notebooks and some connectors run on separately billed Azure services.
2. Google Security Operations
What it is. Google's SIEM and SOAR platform, formerly Chronicle. Data is normalised into the Unified Data Model and detections are written in YARA-L.
Pricing. Google's package overview says "the pricing for all packages is based on ingestion volume". The Standard package includes 12 months of hot retention and runs "up to 1,000 single-event and 75 multi-event detection rules". Enterprise adds threat intelligence, UEBA and Gemini assistance. Google's retention page says retention can be extended "for up to five years". No list price is published.
Watch for. Rule limits by package, and SPL detections need translating to YARA-L.
3. Elastic Security
What it is. A SIEM built on Elasticsearch, available serverless, hosted on Elastic Cloud, or self-managed.
Pricing. Elastic publishes per-GB list prices on its serverless security pricing page. On 23 September 2026 it showed Security Analytics Essentials from $0.09 per GB ingested and $0.017 per GB retained per month, and Security Analytics Complete from $0.11 and $0.019. Elastic states that per-endpoint fees stopped applying on 23 March 2026. Hosted deployments are priced on resources and self-managed on a licence.
Splunk migration. Automatic Migration converts Splunk saved searches to Elastic detection rules and migrates Classic and Dashboard Studio dashboards. It uses an LLM connector to translate SPL to ES|QL. It is generally available from Elastic Stack 9.4 and on Serverless, and needs an Enterprise or Security Complete subscription.
Watch for. Self-managed deployments move cost into the infrastructure and staff you run.
4. CrowdStrike Falcon Next-Gen SIEM
What it is. CrowdStrike's SIEM. CrowdStrike lists Falcon LogScale, its log management product, within the Next-Gen SIEM range, and offers LogScale in its cloud or self-hosted.
Pricing. CrowdStrike's Next-Gen SIEM page says "data from licensed Falcon modules is available in Falcon Next-Gen SIEM without additional ingestion charges". Pricing for third-party data is by quote.
Watch for. The strongest economics apply when Falcon is already your endpoint platform. Check how third-party log volume is priced before you commit.
5. Sumo Logic Cloud SIEM
What it is. A SaaS log analytics platform with a Cloud SIEM that includes UEBA, MITRE ATT&CK coverage mapping and detection-as-code.
Pricing. Sumo Logic's pricing page describes Flex pricing with "$0 ingest" and charges based on data scanned. Cloud SIEM sits in the Enterprise Suite and needs a sales quote.
Watch for. Ingest-free pricing moves cost to search, so heavy hunting or dashboard use drives the bill. Model your query volume.
6. Rapid7 Incident Command
What it is. Rapid7's cloud SIEM. Rapid7's InsightIDR pages now redirect to it.
Pricing. Rapid7's packages page offers "asset-based pricing". Essential keeps logs for 90 days and Advanced and Ultimate for 180 days, with alerts kept for 13 months on every package. No list price is published.
Watch for. Log retention beyond 90 or 180 days is an add-on, which matters if you must keep a year of searchable logs.
7. Where SenseOn fits
SenseOn is a different shape of replacement. Instead of moving the same logs and rules to another SIEM, it collects its own evidence with one lightweight Universal Sensor. That sensor captures endpoint, network and identity telemetry on Windows, macOS and Linux. The platform correlates that evidence into cases. SenseOn charges an annual pool of Flex Intelligence Credits, with no per-GB ingestion charge for sensor telemetry. Edge processing removes around 40% of data before the pipeline starts.
On outcomes, SenseOn publishes that 92.5% of incidents are resolved by AI under human governance, measured across all customer environments over a rolling 30-day window. In AV-Comparatives' 2024 Business Security Test, SenseOn scored 95.9% real-world protection and 98.7% malware protection with zero false alarms. SenseOn is ISO 27001 certified through BSI and deploys alongside your existing SIEM and EDR, so it can run next to Splunk during evaluation. The SenseOn vs Splunk comparison covers the trade-offs in detail.
Moving off Splunk: a numbered plan
A SIEM migration fails when it copies everything or cuts over too early. This order keeps risk low. Our SIEM migration guide has the full checklist.
- Inventory what you actually use. List data sources by daily volume, and detections by whether they fired in the last 90 days. Microsoft's migration tool starts from the same export: a query over Splunk saved searches and macros.
- Decide what each log is for. NIST's log management guide (SP 800-92) asks you to set purpose and retention per source. CISA and partner agencies published guidance on SIEM and SOAR implementation in May 2025, including a document on which logs to prioritise for SIEM ingestion.
- Shortlist two platforms and run a proof of value. Use your own data and your own top 20 detections, not vendor demo data.
- Measure alert quality, not only coverage. Oxford researchers found that SOC analysts reported high false positive rates and that most were benign triggers explained by legitimate activity. Count how many alerts each platform raises that an analyst must validate.
- Run in parallel. Keep Splunk live while the new platform ingests the same sources, and compare detections week by week.
- Cut over by source group. Move identity, endpoint, cloud and network sources in turn, retiring each Splunk input once parity is shown.
- Handle retention last. Archive Splunk data you must keep for audit before you decommission, or keep a reduced licence until it expires.
For a wider view that includes managed services and platforms beyond SIEM, see our SIEM alternatives comparison and our list of the five best SIEM tools.
Sources
- Bushra A. Alahmadi, Louise Axon, Ivan Martinovic, "99% False Positives: A Qualitative Study of SOC Analysts' Perspectives on Security Alarms", USENIX Security Symposium, 2022, https://www.usenix.org/conference/usenixsecurity22/presentation/alahmadi (open access)
- NIST, SP 800-92: Guide to Computer Security Log Management, September 2006, accessed 23 September 2026
- CISA, Guidance for SIEM and SOAR Implementation, 27 May 2025, accessed 23 September 2026
- Splunk, Splunk pricing models, accessed 23 September 2026
- Splunk, Splunk Enterprise Security, accessed 23 September 2026
- Microsoft Learn, Plan costs and understand pricing and billing for Microsoft Sentinel, updated 1 April 2026, accessed 23 September 2026
- Microsoft Learn, Use the SIEM Migration Experience, updated 1 July 2026, accessed 23 September 2026
- Google Cloud, Google SecOps packages overview, last updated 22 September 2026, accessed 23 September 2026
- Google Cloud, Configure SIEM data retention, last updated 22 September 2026, accessed 23 September 2026
- Elastic, Elastic Security serverless pricing, accessed 23 September 2026
- Elastic, Automatic Migration, accessed 23 September 2026
- CrowdStrike, Falcon Next-Gen SIEM, accessed 23 September 2026
- CrowdStrike, Falcon LogScale, accessed 23 September 2026
- Sumo Logic, Sumo Logic pricing, accessed 23 September 2026
- Sumo Logic, Cloud SIEM, accessed 23 September 2026
- Rapid7, Incident Command packages, accessed 23 September 2026
- AV-Comparatives, Business Security Test 2024 (March - June), accessed 23 September 2026
How SenseOn writes, checks and corrects its content: editorial standards.
Frequently asked questions
What is the best Splunk alternative for a security team?
It depends on what you already own. Microsoft 365 E5 estates often start with Microsoft Sentinel. Teams that want long retention included in the price look at Google Security Operations. Teams that want to self-host or pay per GB at low rates look at Elastic Security. Falcon customers look at CrowdStrike Falcon Next-Gen SIEM. Teams that want to stop paying for data volume altogether look at SenseOn.
Is there a free alternative to Splunk Enterprise Security?
Not a like-for-like one. Elastic Security has a free trial and a self-managed option, and Microsoft Sentinel gives new workspaces 10 GB a day free for 31 days. Every option in this guide has paid tiers for production security use.
Can I migrate Splunk detection rules automatically?
Partly. Microsoft Sentinel has a SIEM migration experience that analyses exported Splunk detections and recommends matching Sentinel and Defender XDR detections. Elastic Security has Automatic Migration, which translates Splunk rules and dashboards to Elastic using an LLM connector; it is generally available from Elastic Stack 9.4. Both still need a person to review each rule.
Are observability tools good Splunk alternatives?
For log search, metrics and application monitoring, yes. For security operations they are a different purchase. A SIEM needs detection content, case management, threat intelligence and audit-grade retention. This guide covers security use only.
How long does it take to move off Splunk?
Plan in phases rather than a single cutover. Inventory sources and detections, run the new platform in parallel, prove detection parity on your own data, then retire Splunk sources one group at a time. Keep Splunk until your retention obligations are met or the data is archived elsewhere.
