Best SIEM Tools in 2026

Google Security Operations, usually shortened to Google SecOps, is the security operations platform sold by Google Cloud. It combines a cloud-native SIEM with SOAR automation, curated detections and threat intelligence in one service, and its documentation still lives under the product's earlier Chronicle name. Google places it inside a wider Google Unified Security portfolio and offers Mandiant experts to help customers redesign their detection and response programmes.

The platform's distinguishing asset is threat intelligence. Higher packages include full access to Google Threat Intelligence, which Google describes as combining Mandiant, VirusTotal and Google's own intelligence, including findings from active Mandiant incident-response engagements, and add curated detections based on Mandiant's frontline research. Detection rules can correlate multiple events, and Google publishes a long catalogue of standard parsers for third-party log sources, from AWS CloudTrail and Zscaler to dozens of endpoint and network products. Google says it was named a Leader in the 2026 IDC MarketScape for SIEM and in the 2025 Gartner Magic Quadrant.

Its parent, Alphabet, reported revenue of US$402.8 billion for calendar 2025, the largest of any vendor in this list. Prices are not published: the pricing page requires contact with sales, so costs cannot be compared without a quote.

Microsoft Sentinel is Microsoft's cloud-native SIEM, delivered as an Azure service and increasingly sold alongside the Microsoft Defender security products. Its pricing page divides storage into an analytics tier, which supports all log types with full analytics, alerting and query capabilities, and a lower-cost data lake tier intended for long-term storage of security data used in investigations and hunting.

Sentinel is unusual among enterprise SIEMs in publishing its price structure. Analytics-tier ingestion is billed either pay-as-you-go or through commitment tiers that reserve daily capacity from 100 GB to 50,000 GB per day; Microsoft states that commitment tiers save up to 52% over pay-as-you-go rates and can be upgraded at any time. On 1 October 2025 Microsoft announced a public preview of a smaller 50 GB-per-day commitment tier at promotional pricing, available to sign-ups until 31 December 2026 with the promotional rate held until 31 March 2027. Newer AI features, such as an entity analyzer exposed through the Model Context Protocol, can consume Security Compute Units, which are billed separately.

Microsoft reported revenue of US$331.8 billion for the fiscal year ended 30 June 2026. The main limitation is cost predictability: actual bills depend on data volumes, retention choices and region, and Microsoft describes its listed prices as estimates rather than quotes.

IBM QRadar SIEM is one of the longest-established products in the category and remains on IBM's website as a current product with demos available. Its ownership changed in 2024: on 4 September 2024 Palo Alto Networks completed the acquisition of IBM's QRadar software-as-a-service assets, offering free migration services to eligible SaaS customers moving to Cortex XSIAM, while QRadar clients who wish to remain on QRadar on-premises continue to receive IBM features and support. In practice the IBM-sold product is now the self-managed QRadar, and new cloud deployments are steered to Palo Alto Networks.

IBM lists user behaviour analytics for insider threats, native support for thousands of open-source Sigma community rules, network threat analytics through QRadar Network Detection and Response, and about 700 prebuilt integrations and partner extensions. The product page cites results from a Forrester Total Economic Impact study commissioned by IBM, based on a composite of four customers.

IBM reported revenue of US$67.5 billion for 2025. The main question for buyers is the product's long-term roadmap, given that the SaaS business and its customers have moved to a competitor.

Splunk Enterprise Security (ES) is the SIEM application built on the Splunk data platform. Cisco completed its acquisition of Splunk on 18 March 2024, saying the deal made it one of the largest software companies in the world. ES is now sold in two editions: Essentials, covering SIEM, threat intelligence, Detection Studio, Exposure Analytics and an AI assistant; and Premier, which adds SOAR, user and entity behaviour analytics (UEBA), automated threat analysis and further AI capabilities.

The product's best-known technique is risk-based alerting, which aggregates low-level observations into risk scores per user or system before raising an alert; Splunk claims this can cut alert volumes by up to 90%. Detection Studio manages the lifecycle of detection rules, and federated search lets analysts query data that has not been ingested into Splunk. Newer agentic AI features handle triage, malware reverse engineering and natural-language rule writing.

Cisco reported revenue of US$63.3 billion for its fiscal year ended July 2026. Splunk does not publish ES prices on the product page; each edition is sold by quote.

Cortex XSIAM is Palo Alto Networks' security operations platform. Rather than presenting itself as a SIEM alone, it combines SIEM, SOAR, endpoint detection and response, network and cloud detection, and exposure and attack-surface management on a single data layer, and the company markets it as a replacement for legacy SIEMs. Its sibling products include Cortex XDR, Cortex XSOAR and Cortex Xpanse.

XSIAM gained a large installed base through acquisition: on 4 September 2024 Palo Alto Networks completed its purchase of IBM's QRadar SaaS assets and offered free migration services, delivered with IBM Consulting, to move eligible QRadar SaaS customers to XSIAM. The company states that it was named a Leader in the IDC MarketScape for SIEM in 2026, and it publishes customer stories from organisations including the Green Bay Packers and the UK Ministry of Justice.

Palo Alto Networks reported revenue of US$11.48 billion for its fiscal year ended July 2026. XSIAM has no published pricing and is sold through sales engagements. Because it bundles endpoint protection and automation, it is most economical for organisations willing to consolidate on Palo Alto Networks across several control areas.

FortiSIEM is Fortinet's SIEM, sold as part of the company's Security Fabric and SecOps product range. Fortinet, founded in the San Francisco Bay Area in 2000, says more than one million customers use its products, most of them for network firewalls. FortiSIEM's appeal is strongest for those customers: it ingests FortiGate and other Fortinet telemetry natively, while also collecting logs from third-party devices.

Fortinet states that FortiSIEM was recognised as a Challenger in the 2025 Gartner Magic Quadrant for SIEM, and was named a 2024 Gartner Peer Insights Customers' Choice. Distinctive capabilities include a built-in IT and OT configuration management database with passive and active discovery and continuous monitoring of asset health and performance, native SOAR automation, generative AI assistance, and multi-tenant operation used by providers of SIEM as a service. Support is sold through Fortinet's FortiCare services.

Fortinet reported revenue of US$6.8 billion for 2025. Pricing is not published and is quoted through partners. The product is less frequently chosen by organisations without Fortinet networking, where competitors' cloud-native analytics are often preferred.

Falcon Next-Gen SIEM is CrowdStrike's SIEM, delivered on the same Falcon platform and single agent as its endpoint protection products. It uses Falcon LogScale for log search and retention, and CrowdStrike sells Falcon Search Retention as a separate option for long-term storage. Because Falcon endpoint, identity and cloud data is already in the platform, customers can begin with first-party telemetry and add third-party sources.

CrowdStrike states that it was named a Leader in the IDC MarketScape: Worldwide SIEM 2026 Vendor Assessment and a Customers' Choice in the 2026 Gartner Peer Insights Voice of the Customer for SIEM. The company also promotes agentic investigation features and the ability for customers to build custom security agents.

CrowdStrike reported revenue of US$4.81 billion for the fiscal year ended 31 January 2026. It publishes prices only for its endpoint bundles, from Falcon Go at US$59.99 per device per year to Falcon Enterprise at US$184.99 per device per year, and lists Next-Gen SIEM as an add-on sold through sales. The 15-day free trial covers Falcon Prevent antivirus and device control, not the SIEM.

Datadog Cloud SIEM is the security analytics product of Datadog, which is best known for infrastructure and application monitoring. It analyses logs in real time for detections within seconds, ships more than 800 out-of-the-box detection rules maintained by Datadog's own detection engineers, and lets analysts hunt across 12 months of security data. Investigations use graph-based, entity-focused views, and response can be automated with Datadog Workflows, which offer pre-built SOAR workflows and more than 1,000 actions.

An AI agent, Bits Security Analyst, investigates alerts autonomously; Datadog includes 100 free investigations per month for every terabyte analysed, with a minimum of 50. Datadog also notes that it was named a Leader in the Gartner Magic Quadrant for Observability Platforms, a different category from SIEM.

Datadog reported revenue of US$3.43 billion for 2025. Its pricing is published: Cloud SIEM starts at US$5 per GB analysed per month on annual billing, or US$7.50 on demand, including 12 months of analysis and retention. The pricing suits cloud-native teams already sending logs to Datadog; organisations with large on-premises estates and no Datadog footprint gain less from the shared platform.

Elastic Security is the SIEM and extended detection product of Elastic, the company behind Elasticsearch. It combines AI-driven security analytics, native SOAR automation through Elastic Workflows, and endpoint protection through the Elastic Defend agent, which covers ransomware, memory and behaviour prevention. Its AI features are model-agnostic: customers can use Elastic Managed LLMs or connect models from OpenAI, Anthropic, Google Gemini and others.

Elastic offers more deployment choice than most rivals: Elastic Cloud Serverless, Elastic Cloud Hosted on major clouds, or self-managed software that can be run locally or on Kubernetes. The company states that it was named a Leader in the 2026 IDC MarketScape SIEM assessment and in The Forrester Wave for security analytics platforms in Q2 2025, and a Strong Performer in the Q2 2026 Forrester Wave for XDR platforms.

Elastic reported revenue of US$1.74 billion for the fiscal year ended 30 April 2026. Its serverless security pricing is published and usage-based, with ingest from US$0.09 per GB and retention from US$0.017 per GB per month on the Essentials tier, effective 1 November 2025. Self-managed deployments shift operational work, such as cluster sizing and upgrades, onto the customer.

Rapid7 Incident Command is the detection and response product that Rapid7 previously sold as InsightIDR; the InsightIDR product address now presents Incident Command. It packages SIEM detection, triage, investigation and reporting with cyber asset attack surface management (CAASM), external attack surface management (EASM), SOAR automation and AI-powered features, and Rapid7 describes it as combining total attack-surface context with AI that turns signals into action.

Unlike most SIEMs in this list, Rapid7 prices by asset rather than by data volume. It sells three packages, Incident Command Essential, Advanced and Ultimate, all with 13 months of searchable retention and the option to add more. Asset-based pricing makes budgets easier to predict for organisations that generate large log volumes from a modest number of endpoints and users. Rapid7 also offers managed detection and response services on the same technology.

Rapid7 reported revenue of US$0.86 billion for 2025, the smallest of the publicly listed vendors here. The product is aimed at mid-market security teams; very large enterprises with complex custom detection engineering requirements more often choose the larger platforms above.

Exabeam is a security operations vendor that says it has been helping security teams modernise operations since 2013. On 17 July 2024 Exabeam and LogRhythm completed their merger, combining Exabeam's cloud-native analytics with LogRhythm's on-premises SIEM and data ingestion; the combined company kept the Exabeam name and said its Security Operations Platform would be the foundation of future products. On-premises LogRhythm SIEM customers were offered Exabeam analytics such as UEBA and the Exabeam Copilot assistant.

The New-Scale product line includes New-Scale SIEM, New-Scale Analytics and New-Scale Fusion, covering threat detection, investigation and response (TDIR), UEBA and SOAR. In 2026 Exabeam added Agent Behavior Analytics, which baselines the activity of AI agents in the same way UEBA baselines human users, to detect a new class of insider threat. Exabeam states that it has been named a Leader in the Gartner Magic Quadrant for SIEM for the sixth time.

Exabeam is privately held and backed by private equity; prices are quote-based. Buyers running LogRhythm should check the long-term support plan for their deployment model.

Graylog is a log management company headquartered in Houston, Texas, with offices in London and Hamburg. Its product family starts with Graylog Open, a free, source-available edition under the SSPL licence with no volume restrictions and community support only. Graylog Enterprise adds commercial log management features, and Graylog Security adds SIEM capabilities on top of Enterprise, including threat detection content, investigations and anomaly detection.

Graylog is one of few SIEM vendors to publish entry prices. Graylog Enterprise starts at US$15,000 a year and Graylog Security at US$18,000 a year, both with an entry point of 10 GB per day of processed data or 100 Graylog Compute Units a year. Licensing is based on data processed in the active tier, not on devices, users or stored data, and one compute unit converts to 20 GB of Security processing or 25 GB of Enterprise processing. All paid licences are annual subscriptions.

The open edition makes Graylog a common starting point for smaller teams, which can later upgrade without changing collectors. Its limitations are scale and depth: it lacks the bundled endpoint agents, threat intelligence and large detection libraries of the platform vendors.

Securonix is a privately held SIEM vendor whose flagship is Unified Defense SIEM. The product range also includes a Data Pipeline Manager for routing and filtering telemetry, a Threat Intelligence Platform under the ThreatQ name, UEBA and AEBA behaviour analytics, Securonix Threat Analytics, SOAR and ThreatWatch. A Cloud Advantage programme lets customers run Securonix on top of their own Snowflake or Amazon Web Services data, so security data can stay in a lake the customer already pays for.

Securonix has invested heavily in agentic AI, with an AI SOC analyst called Sam and a set of agentic guardrails intended to govern how AI agents act in the SOC; the company states that it holds ISO/IEC 42001 certification for AI management. It publishes customer stories from banks and managed security providers, including a case in which Redington DigiGlass scaled an MDR service on Securonix SIEM to 15,000 events per second. The company also states that it was named a two-time Customers' Choice on Gartner Peer Insights.

Securonix does not publish prices. Its strongest fit is with MSSPs and enterprises that want behaviour analytics and a bring-your-own-data-lake model; buyers should confirm the integration roadmap for recently added threat-intelligence products.

Sumo Logic is a SaaS log analytics company that sells Cloud SIEM alongside log management and observability products. Francisco Partners completed its acquisition of Sumo Logic on 12 May 2023, taking the previously listed company private. Sumo Logic states that it is trusted by more than 2,500 customers worldwide.

Cloud SIEM normalises and enriches telemetry at ingestion, maps detections to MITRE ATT&CK, groups related signals into insights to reduce noise, and includes UEBA baselining and automation for response. Sumo Logic has also introduced DojoAI agents that act as teammates for security and observability work.

Pricing is unusual. Under the Flex model, Sumo Logic charges for analytics scans rather than ingestion, advertising zero-cost data ingest with unlimited users, and estimates costs per TB scanned according to usage profile. Customers can buy credits by card up to US$25,000 from a self-serve checkout during trial, and an Essentials plan targets small and medium DevOps and SecOps teams, with the Enterprise Suite sold by sales. The model favours teams that store much and query little; heavy analytical workloads may cost more than ingestion-based alternatives.

Wazuh is a free, open-source security platform that combines SIEM and extended detection and response for endpoints and cloud workloads. It describes itself as the world's most widely used open-source security solution, citing more than 15 million protected endpoints, more than 100,000 enterprise users and more than 30 million downloads a year. The software has no licence cost, and community support is free.

Wazuh's agent performs log collection, file integrity monitoring, vulnerability detection, configuration assessment and active response, and the central server correlates events and maps them to compliance frameworks. Because it is self-hosted by default, users carry the operational burden of running indexers and dashboards themselves. The company sells professional support, consulting and training, and offers Wazuh Cloud for those who prefer a managed service.

Wazuh Cloud prices are published by agent count: the Small tier for up to 100 agents starts at US$571 a month, Medium for up to 250 agents at US$923 a month, and Large for up to 500 agents at US$1,467 a month, with a 14-day free trial and no credit card required. Wazuh states that the cloud service is PCI DSS and SOC 2 certified.