Company comparison
Codeium / Windsurf vs Aider
Radar profile, momentum bars, and stack placement side by side.
Codeium / Windsurf
Not scored
momentum
Aider
Not scored
momentum
Codeium / Windsurf capital
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Aider capital
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No radar series.
Momentum head-to-head
Attribute tape
| Field | Codeium / Windsurf | Aider |
|---|---|---|
| Category | Developer and agent infrastructure | Developer and agent infrastructure |
| Stack | Layer 6 | Layer 6 |
| HQ | Mountain View, CA, United States | — |
| Founded | 2021 | — |
| Status | Acquired | Operating |
| Funding | — | — |
| Momentum | — | — |
| Summary | Codeium (later rebranded Windsurf) built an AI coding assistant and AI-native code editor that provides autocomplete, chat, and multi-file agent-style editing workflows for software developers. The company was acquired by Cognition AI in July 2025 after Google separately hired its founding team and licensed certain technology. | Aider is an open-source AI pair-programming tool that runs in the terminal and edits code directly in a local Git repository through natural-language chat with an LLM. It automatically commits changes and supports a wide range of hosted and local models. |
| Who for | Teams evaluating AI vendors in this category. | Teams evaluating AI vendors in this category. |
| Differentiator | Codeium (later rebranded Windsurf) built an AI coding assistant and AI-native code editor that provides autocomplete, chat, and multi-file agent-style editing workflows for software developers. The company was acquired by Cognition AI in July 2025 after Google separately hired its founding team and licensed certain technology. | Aider is an open-source AI pair-programming tool that runs in the terminal and edits code directly in a local Git repository through natural-language chat with an LLM. It automatically commits changes and supports a wide range of hosted and local models. |
