Millwright vs Windsurf (Codeium)
Which AI tool is better in 2026? Let's compare.
Fast-Answer Verdict & Decision Factors (2026)
Editorial EvaluationMillwright vs Windsurf (Codeium): compare documented features, pricing, and pros/cons below β the best choice depends on your primary workflow.
Choose Millwright if: Free (Open Source)
An open-source, self-hosted LLM router in a single Rust binary. It sits between your AI apps and model providers, routing each request to the lowest-cost healthy model your policy allows β with cache-aware affinity and spend control.
Choose Windsurf (Codeium) if: Free / $15/mo
Developers wanting an AI coding assistant with deep IDE integration, now under the Devin brand.
| Feature | Millwright | Windsurf (Codeium) |
|---|---|---|
| Pricing | Free (Open Source) | Free / $15/mo |
| Best For | An open-source, self-hosted LLM router in a single Rust binary. It sits between your AI apps and model providers, routing each request to the lowest-cost healthy model your policy allows β with cache-aware affinity and spend control. | Free AI code completion and chat assistant |
Detailed Analysis: Millwright vs Windsurf (Codeium)
Pricing & Value
Both tools offer free tiers, lowering the barrier to entry. However, comparing their paid plans β Free (Open Source) vs Free / $15/mo β reveals different value propositions depending on your usage scale.
Feature Comparison
When comparing features, Millwright excels at an open-source, self-hosted llm router in a single rust binary. it sits between your ai apps and model providers, routing each request to the lowest-cost healthy model your policy allows β with cache-aware affinity and spend control., while Windsurf (Codeium) specializes in free ai code completion and chat assistant. Millwright stands out with Self-hosted LLM router in one Rust binary β no hosted control plane, Policy-controlled routing across cheap, mid, and frontier roles, Cache-aware session affinity to protect prompt-cache reuse, Accepts OpenAI Chat Completions and Anthropic Messages; routes to OpenAI-compatible, Anthropic, or Bedrock, Spend ledger (SQLite default, PostgreSQL for prod) with routing provenance. Windsurf (Codeium) differentiates itself with Generous free tier, Fast completions, Multi-IDE.
Use Case & Target Audience
Millwright and Windsurf (Codeium) target overlapping needs; compare the features, pricing, and pros/cons above against your own workflow. For teams already invested in complementary tools, ecosystem compatibility may be the deciding factor.
Verdict
There is no published score comparison for this pair yet. Start with the tool whose documented features and pricing best match your workflow.
Alternatives Worth Considering
While Millwright and Windsurf (Codeium) are both strong contenders in the AI tools space, depending on your specific needs, you may also want to explore other tools in this category. Visit our full category listing for a complete overview of available options, or check our expert rankings for curated recommendations.
Pros
- β’ Self-hosted LLM router in one Rust binary β no hosted control plane
- β’ Policy-controlled routing across cheap, mid, and frontier roles
- β’ Cache-aware session affinity to protect prompt-cache reuse
- β’ Accepts OpenAI Chat Completions and Anthropic Messages; routes to OpenAI-compatible, Anthropic, or Bedrock
- β’ Spend ledger (SQLite default, PostgreSQL for prod) with routing provenance
Cons
- β’ Early release (v0.1.0) β the API may shift
- β’ Router only β does not orchestrate agents or inspect prompts
- β’ Requires Rust 1.97+ to build from source
Pros
- β’ Generous free tier
- β’ Fast completions
- β’ Multi-IDE
Cons
- β’ Less powerful than Copilot
- β’ Newer product
Frequently Asked Questions
Which is better, Millwright or Windsurf (Codeium)?
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There is no published score comparison for Millwright and Windsurf (Codeium) yet; compare their documented features, pricing, and pros/cons above.
Is Millwright free?
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Yes, Millwright offers a free tier. Millwright is priced at Free (Open Source). For the most up-to-date pricing information, visit the official Millwright website.
Is Windsurf (Codeium) free?
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Yes, Windsurf (Codeium) offers a free tier. Windsurf (Codeium) is priced at Free / $15/mo. Check the official Windsurf (Codeium) website for the latest pricing details.
What are the main differences between Millwright and Windsurf (Codeium)?
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Millwright focuses on an open-source, self-hosted llm router in a single rust binary. it sits between your ai apps and model providers, routing each request to the lowest-cost healthy model your policy allows β with cache-aware affinity and spend control., while Windsurf (Codeium) specializes in free ai code completion and chat assistant. Millwright costs Free (Open Source) versus Windsurf (Codeium) at Free / $15/mo. Millwright stands out with Self-hosted LLM router in one Rust binary β no hosted control plane, Policy-controlled routing across cheap, mid, and frontier roles, Cache-aware session affinity to protect prompt-cache reuse, Accepts OpenAI Chat Completions and Anthropic Messages; routes to OpenAI-compatible, Anthropic, or Bedrock, Spend ledger (SQLite default, PostgreSQL for prod) with routing provenance. Windsurf (Codeium) stands out with Generous free tier, Fast completions, Multi-IDE. Your choice should be guided by which tool's strengths align better with your specific workflow requirements.