OpenObserve vs Splunk: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for OpenObserve and Splunk side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
OpenObserve
Open source, petabyte-scale observability for logs, metrics, and traces at a fraction of the cost.
Best for you if:
- • You want significantly lower storage costs (up to 140x compared to Elasticsearch)
Splunk
Data platform for security and observability
Best for you if:
- • You want powerful search
| At a Glance | OpenObserve | Splunk |
|---|---|---|
Starts at | Not published | Not published |
Category | Monitoring Log Management | Log Management Analytics |
Rating | n/a | 4.4/5 G2 4.3 · Capterra 4.6 697 reviews |
Free plan | No | No |
Watch out for | Audit Trail is 2% of monthly spend. | Overage fees for exceeding negotiated limits. |
Choose OpenObserve or Splunk?
Choose OpenObserve if
- You want significantly lower storage costs (up to 140x compared to Elasticsearch)
- You want high performance and scalability, capable of handling petabytes of data
- You work in monitoring, not log management
Choose Splunk if
- You want powerful search
- You want enterprise features
- You work in log management, not monitoring
In-Depth Analysis
OpenObserve
Open source, petabyte-scale observability for logs, metrics, and traces at a fraction of the cost.
OpenObserve's Pay As You Go model offers a fair and transparent pricing structure, especially for ingestion at $0.50 per GB and querying at $0.01 per GB, which can be competitive for high-volume users.
Watch out
Audit Trail is 2% of monthly spend.
Strengths
- Pro: Significantly lower storage costs (up to 140x compared to Elasticsearch).
- Pro: High performance and scalability, capable of handling petabytes of data.
- Pro: Open-source nature allows for community contributions, security audits, and full control.
- Pro: Unified platform for logs, metrics, and traces simplifies observability.
- Pro: Supports open standards and protocols for vendor-neutral integration.
Weaknesses
- Con: Pricing for advanced features like AI Assistant and AI SRE Agent is currently in preview, future costs are not fully detailed.
- Con: Requires some technical expertise for self-hosting and managing storage buckets.
Key features
Splunk
Data platform for security and observability
The lack of transparent pricing for any tier (Workload, Ingest, Entity, Activity-based) suggests it can be expensive, requiring direct engagement for quotes.
Watch out
Overage fees for exceeding negotiated limits.
Strengths
- Pro: Powerful search
- Pro: Enterprise features
- Pro: Great visualizations
Weaknesses
- Con: Very expensive
- Con: Complex pricing
Key features
Plans and prices: OpenObserve vs Splunk
| Tool | Plans and prices | Source |
|---|---|---|
| OpenObserve |
| openobserve.ai/pricing read Oct 22, 2026 |
| Splunk |
| splunk.com/pricing read Oct 31, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on OpenObserve pricing and Splunk pricing.
Key Takeaways
OpenObserve
- Choose if you want open source, petabyte-scale observability for logs, metrics, and traces at a fraction of the cost
Splunk
- Choose if you want data platform for security and observability
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Only Splunk has a published user rating (4.4/5 from 697 reviews); OpenObserve has none we can show.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do OpenObserve and Splunk compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Only Splunk has a published user rating (4.4/5 from 697 reviews); OpenObserve has none we can show.
What are OpenObserve and Splunk used for?
OpenObserve: Open source, petabyte-scale observability for logs, metrics, and traces at a fraction of the cost. Splunk: Data platform for security and observability.
What does OpenObserve cost vs Splunk?
OpenObserve has no public paid-plan price on file. Splunk has no public paid-plan price on file. Prices read on the vendors' pricing pages, latest check Oct 31, 2026.
What's the main difference between OpenObserve and Splunk?
OpenObserve's main strength: significantly lower storage costs (up to 140x compared to Elasticsearch). Splunk's main strength: powerful search.