Solo.io, Inc.
Cambridge, US · Founded 2017 · Delaware corporation · 2 known investors
Cambridge, MA software company building API gateway, service mesh and AI agent connectivity infrastructure for Kubernetes.
Also known as solo.io · Solo.io
Founders & leadership
Solo.io, Inc. was founded in 2017 by Idit Levine.
Board
Investors · 2
Reported raises · per SEC filings
Form D private placements$166.8M disclosed across 4 rounds · 2017–2021
▶$130MraisedOct 2021 · 5 investors · Other TechnologyRule 506(b)
- Idit LevineExecutive Officer, Director
- Puneet AgarwalDirector
- Satish DharmarajDirector
- Offering amount
- $135M
- Amount sold
- $130M
- First sale
- Oct 2021
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$23MraisedSep 2020 · 6 investors · OtherRule 506(b)
- Puneet AgarwalDirector
- Satish DharmarajDirector
- Idit LevineExecutive Officer, Director
- Offering amount
- $23M
- Amount sold
- $23M
- First sale
- Aug 2020
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$11.3MraisedSep 2018 · 6 investors · Other TechnologyRule 506(b)
- Puneet AgarwalDirector
- Satish DharmarajDirector
- Idit LevineExecutive Officer, Director
- Offering amount
- $11.3M
- Amount sold
- $11.3M
- Proceeds to insiders
- $1M
- First sale
- Aug 2018
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$2.5MraisedSep 2017 · 1 investors · Other TechnologyRule 506(b)
- Idit LevineExecutive Officer, Director
- Offering amount
- $3M
- Amount sold
- $2.5M
- Proceeds to insiders
- $250K
- First sale
- Sep 2017
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Solo.io, Inc. is a software development company headquartered in Cambridge, Massachusetts, that builds infrastructure for securing and simplifying connectivity across cloud and AI workloads. Its product portfolio spans API gateways, service mesh and AI/agent infrastructure, with an emphasis on unifying application networking across heterogeneous environments.
The company's recent product line includes Gloo Gateway 2.0, Solo Enterprise for kagent (positioned as a context-aware platform for agents, tools and LLMs on Kubernetes), Agent Gateway, Agent Mesh, and an MCP Gateway delivered within the kgateway project. It also maintains open source engagement, launching the agentevals project and contributing agentregistry to the Cloud Native Computing Foundation in March 2026, and participating in KubeCon Europe.
Third-party listings classify Solo.io under NAICS 5112 (Software Publishers), report a headcount of roughly 299 employees (201-500 range) as of July 2026, and estimate annual revenue in a $100M-$250M range. Reported technologies in use include Rust, C++, gRPC, Module Federation, Amazon S3, Amazon Route 53, Domo and 6sense.
Business model
Solo.io sells software infrastructure for application and AI connectivity, combining commercial enterprise products (for example Gloo Gateway and Solo Enterprise for kagent) with open source projects such as kgateway, agentevals and agentregistry that feed developer adoption. It also works with channel partners, having appointed Singularity DevOps as a channel partner in April 2025. The sources do not disclose pricing or contract structures.
Not stated in the sources beyond the sale of enterprise software products; a third-party directory estimates annual revenue in the $100M-$250M range.
Traction
A third-party directory reports approximately 299 employees as of July 2026 (201-500 band), estimated revenue of $100M-$250M, and about $172M raised across four rounds. Traction signals in the sources are product releases, open source contributions to the CNCF, KubeCon Europe participation and a channel partnership; no customer counts or named customers are disclosed.
Latest developments
The most recent items in the sources are from March 2026: the launch of the agentevals open source project and the contribution of agentregistry to the CNCF (25 March 2026), and the announcement of a project at KubeCon Europe in Amsterdam (28 March 2026). Prior to that, Gloo Gateway 2.0 became available in October 2025 and Solo Enterprise for kagent in September 2025.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
A third-party listing places Solo.io among cloud-native networking vendors, naming NGINX, Tyk, Apigee and Kong as similar companies, and characterizes it as a mid-sized software firm with 201-500 employees and estimated revenue of $100M-$250M. These figures are directory estimates rather than company-confirmed disclosures.
Sources describe Solo.io as positioning itself as a unifier of secure cloud connectivity across environments, bringing API gateway, service mesh and AI workload orchestration together, including context-aware infrastructure for agents, tools and LLMs on Kubernetes. Independent verification of these claims is not present in the material.
Technology
Products center on Kubernetes-native networking: API gateways (Gloo Gateway 2.0, kgateway with MCP Gateway), service mesh, and agent-oriented infrastructure (Agent Gateway, Agent Mesh, Solo Enterprise for kagent) for agents, tools and LLMs. Reported technology stack elements include Rust, C++, gRPC, Module Federation, Amazon S3, Amazon Route 53, Domo and 6sense.
Go-to-market
Go-to-market combines open source community adoption (kgateway, agentevals, agentregistry contributed to the CNCF), presence at cloud-native industry events such as KubeCon Europe, direct enterprise sales, and channel partnerships such as the April 2025 appointment of Singularity DevOps.
Large enterprises and mid-market to enterprise platform teams running cloud-native microservices, Kubernetes environments and AI workloads that require secure networking, zero-trust approaches and cross-cloud service connectivity.
Geography
Headquartered in Cambridge, Massachusetts, United States. A third-party directory reports employees across six continents, including North America, Europe and Asia, and states the company serves enterprises worldwide.
History
The company was founded in 2017 and is headquartered in Cambridge, Massachusetts. Public listings record four funding rounds totaling approximately $172 million, the most recent a Series C of $135 million announced on 7 October 2021. Product activity documented in the sources spans 2025-2026: MCP Gateway within kgateway (April 2025), Agent Gateway and Agent Mesh (April 2025), Solo Enterprise for kagent (September 2025), Gloo Gateway 2.0 (October 2025), and the agentevals open source project plus an agentregistry contribution to the CNCF (March 2026).
Risks & controversies
No risks, litigation or controversies are described in the available sources. Financial statement data in the PrivCo profile is unpopulated, so revenue, EBITDA and valuation figures cannot be verified.
Compiled by commissioned research from 2 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 7
launches, deals, and filingsSolo.io attended KubeCon Europe, where it announced a project in Amsterdam.
Solo.io launched the agentevals open source project and contributed agentregistry to the Cloud Native Computing Foundation.
Solo.io announced the availability of Gloo Gateway 2.0.
Solo.io announced the availability of Solo Enterprise for kagent, described by the company as a context-aware platform for agents, tools and LLMs on Kubernetes.
Solo.io launched Agent Gateway and introduced Agent Mesh for unified AI connectivity.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Legal entities · 1
corporate structureIn the news
▸Research sources · 2
primary sources listed
- solo.io Company Overview, Contact Details & Competitors | LeadIQleadiq.com · web
2 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Solo.io, Inc. do?
- Cambridge, MA software company building API gateway, service mesh and AI agent connectivity infrastructure for Kubernetes.
- Who founded Solo.io, Inc.?
- Solo.io, Inc. was founded by Idit Levine in 2017.
- Who are Solo.io, Inc.'s investors?
- Solo.io, Inc.'s investors include Redpoint Ventures, True Ventures.
- How much funding has Solo.io, Inc. raised?
- Solo.io, Inc. has disclosed $166.8M raised across 4 rounds.
- Where is Solo.io, Inc. headquartered?
- Solo.io, Inc. is headquartered in Cambridge, US.