Splunk alternatives: where to go and how to leave without losing data
Nine tools in detail, Splunk's contract read clause by clause, and a seven-step migration plan.
The short answer: Elastic Security if you want public pricing and automated rule migration, Microsoft Sentinel if you live on Microsoft 365, Wazuh or Graylog for a free open-source route, and Grafana Cloud or New Relic if Splunk was only your log search or APM. We compared them using vendors' official pricing pages, Splunk's General Terms and each vendor's migration docs.
Some links may be affiliate links. The ranking is editorial: a sponsored spot is always labeled on its card, and no affiliate link changes a score.
Why teams end up leaving Splunk
Splunk's search and dashboards still get praise. Teams leave over the bill, a contract with little wiggle room, and lock-in to SPL. Since Cisco took over, uncertainty about the roadmap gets added to the list.
No public pricing
Splunk Cloud Platform, Splunk Enterprise and Enterprise Security are quote-only. The only listed prices are Observability Cloud ($15, $60 and $75 per host per month, billed annually), AppDynamics and On-Call.
Ingest or workload, the bill keeps climbing
Ingest pricing charges per GB indexed; workload pricing sells reserved compute (SVCs) sized to your peak. A pharma reviewer on PeerSpot: "instead of being charged based on ingestion, we are paying for SVCs". A finance engineer: "Splunk is expensive. We have had some challenges in ensuring that all data is available in Splunk due to its cost".
Auto-renewal and no exit for convenience
Splunk's General Terms auto-renew for a period equal to the prior term unless you give notice. There's no termination for convenience, and fees are non-cancelable and non-refundable.
30 days to retrieve your data
After termination, your content stays available for 30 days, then it's deleted. On Splunk Cloud, exporttool isn't available: it only runs on an on-prem indexer.
Everything lives in SPL
Searches, alerts and dashboards are all SPL, and no rival reads it. Sentinel and Elastic offer translation, but only partial. G2 reviewers also say new analysts struggle with query writing.
Cisco now owns it
Cisco closed the roughly $28 billion acquisition in 2024. Cisco shops do get a perk: eligible Cisco data counts at half weight against ingest. Everyone else gets a new owner and open questions.
You're leaving because… go to…
The right move depends on what Splunk did for you: security (SIEM) or logs and observability.
From $0.09 per GB ingested, public pricing.
You run on Microsoft 365 and AzureMicrosoft SentinelBuilt-in SPL to KQL migration.
You want free and open sourceWazuhFree, or cloud from $571 a month.
You must keep a year of searchable logsGoogle SecOps12 months hot retention in Standard.
Your endpoints run CrowdStrike FalconCrowdStrike Falcon Next-Gen SIEMFalcon data with no extra ingest charge.
Splunk was just your log searchGrafana Cloud50 GB of logs free per month.
Splunk alternatives, one by one
For each tool: why switch, who it fits, the catch, how to migrate, and what it costs. The first seven are SIEMs, the last two are log and observability tools. Prices come from official pages, in US dollars. Want to cut Splunk volume before you leave? A pipeline tool like Cribl can stream Splunk buckets out and reroute data.
Elastic Security: the cheapest Splunk alternative you can price before a sales call
Public pricingWhy switch to Elastic. Elastic publishes its per-GB price and ships a tool built to pull teams off Splunk. Automatic Migration first matches your Splunk rules to Elastic's prebuilt detections, then translates the rest from SPL to ES|QL with AI (three self-correction attempts) and maps CIM fields to ECS. The same platform covers observability, so it can replace both halves of a Splunk contract.
Who it fits. Security teams that want a predictable bill, and anyone who already runs the ELK stack. It scores 4.3 out of 5 in our best SIEM ranking.
Who should skip it. Small teams planning to save money by self-hosting: running Elasticsearch well takes real ops time.
The catch. Partially translated rules still need a human. Serverless Essentials starts at $0.09 per GB ingested and $0.017 per GB retained per month; Complete is $0.11 and $0.019. The first 50 GB of egress are free, then $0.05 per GB.
How to migrate. Run Automatic Migration on your rule export, sort the output into matched, translated and partial, then start the parallel run with your highest-volume sources, where the savings show up first.
- Free option
- trial, free self-managed license
- Billed by
- GB ingested and retained
- Starting price
- $0.09/GB ingested (Essentials)
- Catch
- partial rules need rework
Microsoft Sentinel: the best-tooled exit if you run on Microsoft 365 and Azure
Microsoft shopsWhy switch to Sentinel. Sentinel has a built-in SIEM migration experience: upload your Splunk export and it translates simple single-source SPL rules to KQL, turns lookups into watchlists and maps CIM to ASIM. On Microsoft 365, part of your Microsoft logs comes in free, up to 5 MB per user per day according to the pricing page.
Who it fits. Companies on Entra ID, Defender and Azure that want a managed SIEM with no cluster to babysit. Top of our best SIEM ranking at 4.3 out of 5.
Who should skip it. Teams whose logs mostly come from outside Microsoft: you lose the free-ingest perk and pay per GB on everything.
The catch. Azure only, and no per-GB price on the page: you get a calculator and commitment tiers from 100 to 50,000 GB per day, with savings of up to 52%.
How to migrate. Translated rules land disabled. Review each one before switching it on. Microsoft itself says not to migrate everything blindly.
- Free option
- Microsoft 365 logs up to 5 MB/user/day
- Billed by
- GB ingested, commitment tiers
- Starting price
- quote via Azure calculator
- Catch
- Azure only
Wazuh: the free, open-source Splunk alternative, if someone can run it
Open sourceWhy switch to Wazuh. Wazuh is free and open source and covers endpoint detection plus log correlation. People coming from ELK settle in fast: "I like Wazuh because it is a lot like ELK, which I was already comfortable with" (PeerSpot). 4.1 out of 5 in our SIEM ranking, where Blumira is the pick for small teams that want no tuning at all.
Who it fits. SMBs with a capable sysadmin who want out of license fees.
Who should skip it. Teams that leaned on Splunk ES's advanced behavior analytics.
The catch. Self-hosting is heavy. Wazuh Cloud starts at $571 a month for up to 100 agents (1 month indexed, 3 months archived), then $923 for 250 and $1,467 for 500.
How to migrate. The 14-day cloud trial needs no card: deploy agents on a sample of machines and compare alerts with Splunk side by side.
- Free option
- yes, open source
- Billed by
- agent (cloud)
- Starting price
- $571/month, 100 agents
- Catch
- heavy to operate
Graylog: free with no volume cap, and paid tiers with real prices
Listed pricesWhy switch to Graylog. Graylog Open is free with no volume limit, and the paid editions actually list a starting price: Enterprise from $15,000 a year, Security from $18,000 a year.
Who it fits. Teams that want central logging on zero budget today and a SIEM tomorrow without switching tools. Graylog Security sits at 3.8 in our SIEM ranking.
Who should skip it. A small business that wants a paid SIEM on a tight budget.
The catch. The free edition is SSPL-licensed and self-hosted.
How to migrate. Start with infrastructure logs: point your forwarders at Graylog and keep Splunk running in parallel.
- Free option
- yes, Graylog Open, no volume cap
- Billed by
- active daily volume
- Starting price
- $15,000/year (Enterprise)
- Catch
- high paid entry ticket
Sumo Logic: stop paying for incident-day log spikes
No ingest penaltyWhy switch to Sumo Logic. Its Flex plan advertises $0 ingest: you pay for the data your searches scan, not what you send. No more license warnings on the one day everything logs twice as much.
Who it fits. Teams that ingest a lot but search a little, across security and app logs.
Who should skip it. Teams running heavy searches all day long.
The catch. No published amounts: Essentials and Enterprise Suite are quote-only.
How to migrate. During the trial, replay your most frequent Splunk scheduled searches. Those will drive your bill.
- Free option
- free trial
- Billed by
- data scanned (Flex)
- Starting price
- custom quote
- Catch
- bill tracks your searches
Google SecOps: 12 months of hot retention included
Long retentionWhy switch to Google SecOps. The Standard package includes 12 months of hot retention, exactly where Splunk bills balloon. Pricing is based on ingestion volume across Standard, Enterprise and Enterprise Plus.
Who it fits. Security teams that must keep a year of searchable logs. 4.0 in our SIEM ranking.
Who should skip it. Anyone who wants a number before talking to sales.
The catch. No public price, and rules are written in YARA-L.
How to migrate. Get a quote on your real Splunk GB per day, then rewrite the detections that actually fired first.
- Free option
- no
- Billed by
- ingestion volume
- Starting price
- custom quote
- Catch
- no public price
CrowdStrike Falcon Next-Gen SIEM: obvious if your endpoints already run Falcon
Falcon shopsWhy switch to CrowdStrike. Data from licensed Falcon modules flows into the SIEM "without additional ingestion charges", per the official page. If Falcon is your EDR, a big chunk of your Splunk volume stops costing extra.
Who it fits. Existing Falcon customers.
Who should skip it. Anyone without Falcon: the main argument disappears.
The catch. Quote-only, and yet another query language (CQL).
How to migrate. Use the 15-day trial to onboard one non-Falcon source and see what it really costs.
- Free option
- 15-day trial
- Billed by
- quote, Falcon data included
- Starting price
- custom quote
- Catch
- opaque pricing
Grafana Cloud: if Splunk was just your log search
Cheap logsWhy switch to Grafana Cloud. Plenty of teams pay Splunk to grep application logs, not to run a SIEM. Loki is open source and cheap to store. The free tier gives 50 GB of logs, 14-day retention and 3 users.
Who it fits. Dev and ops teams, often already on Prometheus. Same prices as in our Datadog alternatives guide.
Who should skip it. Security teams: it isn't a SIEM.
The catch. Loki indexes labels, not full text, so SPL-style free-text search is slower. Pro is $19 a month plus usage: $0.05 per GB processed, $0.40 per GB written, $0.10 per GB retained. Enterprise needs a $25,000 yearly minimum.
How to migrate. Rewrite your top SPL searches in LogQL and settle your labels before you ship the first GB.
- Free option
- yes, 50 GB logs/month
- Billed by
- GB processed, written, retained
- Starting price
- $19/month + usage
- Catch
- not a SIEM
New Relic: if Splunk was your APM and observability stack
ObservabilityWhy switch to New Relic. If your Splunk spend is mostly Observability Cloud or AppDynamics, New Relic covers it with 100 GB free per month and one full user, then $0.40 per GB ($0.60 with Data Plus).
Who it fits. Small product teams with many services and few full users. Same prices as in our Datadog alternatives guide.
Who should skip it. Security teams, and large teams that all want full access.
The catch. Per-user pricing: Core $49 a month, Pro $349 a month billed annually. EU data center adds $0.05 per GB.
How to migrate. Dual-ship one app over OpenTelemetry for two weeks and compare against your Splunk per-host bill.
- Free option
- yes, 100 GB/month
- Billed by
- GB and user
- Starting price
- $0.40/GB over 100 GB
- Catch
- not a SIEM
The 9 alternatives vs Splunk
One row per tool: what it replaces on the left, starting price and migration path on the right.
| What it replaces | Starting price and migration | |
|---|---|---|
| SplunkStarting point | SIEM, logs, observability | Cloud, Enterprise and ES quote-only; Free capped at 500 MB per day |
| Elastic SecurityPublic pricing | SIEM and logs | From $0.09/GB ingested; automatic rule migration |
| Microsoft SentinelMicrosoft shops | SIEM | Quote via calculator; built-in SPL to KQL |
| WazuhOpen source | SIEM and XDR | Free, cloud from $571/month |
| GraylogListed prices | Logs, then SIEM | Open free, Enterprise from $15,000/year |
| Sumo LogicNo ingest penalty | SIEM and logs | Custom quote; billed on data scanned |
| Google SecOpsLong retention | SIEM | Custom quote; rules rewritten in YARA-L |
| CrowdStrike Next-Gen SIEMFalcon shops | SIEM | Custom quote; 15-day trial |
| Grafana CloudLogs | Logs and metrics | Free 50 GB, Pro $19/month + usage; LogQL |
| New RelicObservability | APM and logs | 100 GB free, then $0.40/GB |
Prices exclude tax, in US dollars, as listed by vendors in 2026 and subject to change. Run the numbers on your own volume.
Migrate off Splunk in seven steps
Order matters: each step protects your contract, your data or your detections.
Read your order form and log the renewal date
FirstRenewal is automatic, so the non-renewal notice beats everything else. Check whether your order form overrides the General Terms and put the date on the calendar.
- Protects
- your budget
- Time
- one hour
Inventory sources and the rules that matter
Month 1List sources by volume and scheduled searches by real use. Rules that never fired stay behind.
Tip: per Splunk Lantern, spreading scheduled searches and killing unused ones cuts SVC consumption while you're still paying.
- Protects
- your time
- Time
- 1 to 2 weeks
Plan the data export
Month 1On-prem, exporttool pulls raw events from the indexer. On Splunk Cloud, use search exports (watch the default limits that truncate) or Cribl, which can read buckets. Finish within 30 days of termination.
- Protects
- your history
- Time
- depends on volume
Translate rules with the destination's tooling
Months 1 to 2Sentinel converts simple SPL to KQL; Elastic converts to ES|QL. Tag every rule: translated, partial, rewrite.
- Protects
- your detections
- Time
- a few weeks
Run both tools in parallel
Months 2 to 3Send the same sources to both and compare alerts. Start with the biggest sources, since they drive the bill.
- Protects
- your coverage
- Time
- until alerts match
Rebuild the dashboards people use
Month 3No Splunk dashboard imports cleanly anywhere. Rebuild only the ones that get opened.
- Protects
- your teams
- Time
- a few days
Cut Splunk before renewal
EndSend written non-renewal, shut down forwarders, and confirm the export is complete before the 30-day window closes.
- Protects
- your budget
- Time
- one day
Is your tool missing from this page? Email us: hello@hackceleration.com
What makes a Splunk exit go wrong
The expensive mistakes almost always surface at renewal time.
Missing the notice window
Miss it and the term renews for the same length, with non-refundable fees.
Counting on exporttool in Splunk Cloud
It's on-prem only. Plan search exports or Cribl, and start before the contract ends.
Trusting auto-translation
Sentinel only handles simple single-source queries; Elastic leaves partial rules. Review every one.
Mixing up SIEM and logging
Replacing a SIEM with Grafana or New Relic leaves security without correlation. Choose the use case first.
Ignoring the Cisco discount
Cisco shops get eligible data counted at half weight. Price that in before leaving.
Underestimating self-hosting
Wazuh, Graylog Open and Elasticsearch are license-free, not engineer-free.
- Renewal and notice dates logged
- Sources ranked by volume
- Rules that matter listed
- Data export proven
- Every translated rule reviewed
- Parallel run until alerts match
- Written non-renewal sent
- Export verified inside 30 days
Splunk alternatives: FAQ
What is the cheapest Splunk alternative?
Among paid SIEMs with public pricing, Elastic Security starts at $0.09 per GB ingested. Free routes are Wazuh, Graylog Open and OpenSearch, if you can self-host. See our best SIEM ranking for the full picture.
Is there a free, open-source alternative to Splunk?
Yes. Wazuh, Graylog Open and OpenSearch (Apache 2.0) are free to self-host. In the cloud, Grafana Cloud gives 50 GB of logs a month and New Relic 100 GB.
Is Splunk free?
Splunk Free indexes up to 500 MB a day on a single instance, with no alerting or authentication. Three warnings in a rolling 30 days block search.
Splunk vs Datadog: which one?
Datadog is observability-first; Splunk also does security. For observability, read our Datadog alternatives guide, which lists Grafana Cloud and New Relic at the same prices.
Splunk vs Elastic: which one?
Elastic if you want to see the price before signing and automate rule migration. Splunk if your team is fluent in SPL and the bill is bearable, especially on a Cisco estate.
Is Splunk being discontinued after the Cisco acquisition?
No. Cisco completed the acquisition in 2024 and still sells Splunk. The concrete change is a half-weight ingest count for eligible Cisco data.
Can I convert my SPL queries?
Partly. Sentinel translates simple SPL to KQL and Elastic to ES|QL; the rest needs a manual rewrite. No tool is 100% reliable.
How long does a Splunk migration take?
It depends on your rule and source count. Plan backwards from renewal, leaving room to run both tools until alerts match.
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