Bolt.newvsAider

2 agents, 2 evaluations — 0 community and 2 editorial — compared across overall score, task fit, reliability, cost, ease of setup, and drift over time.

Current verdict: Aider currently leads Bolt.new by 0.4 points on Ruling's 10-point scale; confirm the top-review context before shortlisting.

Current signal

last 90 days

Freshness

1 of 2 loaded evaluations are from the last 90 days

Version context

reviews now ask model/runtime and tier

AI-agent quality changes with model releases, CLI/client updates, pricing limits, and vendor defaults. Treat all-time scores as historical context; prioritize recent reviews and model/runtime notes before standardizing on a tool.

ruling.so/compare/bolt-new-vs-aider

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Overall scoreaggregate · 1–10

Bolt.new

StackBlitz · Coding Agents

8.4/10

Aider

Paul Gauthier · Coding Agents

8.8/10

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Scorecard

Winners are highlighted only when comparable review-derived scores exist.

2 evaluations considered

Overall

Weighted aggregate verdict across the review.

8.4/10

4.2/5 source average.

8.8/10

4.4/5 source average.

review avg

Task fit

How well the agent matches the job users hired it for.

9.2/10

4.6/5 source average.

9.0/10

4.5/5 source average.

review avg

Reliability

Consistency, uptime, and repeatability under real workflows.

7.6/10

3.8/5 source average.

8.4/10

4.2/5 source average.

review avg

Ease of setup

How quickly teams can get from signup to useful output.

9.6/10

4.8/5 source average.

7.2/10

3.6/5 source average.

review avg

Cost efficiency

Whether the results justify the seat, usage, or platform cost.

7.6/10

3.8/5 source average.

9.0/10

4.5/5 source average.

review avg

Drift score

How well quality holds up over longer sessions and releases.

7.6/10

3.8/5 source average.

8.6/10

4.3/5 source average.

review avg

At a glance

A truthful, data-backed summary of where each agent stands today.

Bolt.new

StackBlitz · Coding Agents

Bolt.new is a browser-based full-stack agent that scaffolds, runs, and deploys complete web applications from a single prompt — no local setup required. Built on StackBlitz's WebContainers, it has become the leading "vibe coding" tool for rapid prototyping and has spawned an ecosystem of open-source forks. It is especially popular with non-developers and startup founders who want functional MVPs without writing code.

Best signalFast full-stack prototypes with token economics to watch

Aider

Paul Gauthier · Coding Agents

Top score

Aider is the most popular open-source terminal-based coding agent, enabling AI-assisted pair programming directly in your CLI. It maps your repository with a tree-sitter code graph and surgically edits files while automatically creating git commits for every change. Aider supports virtually every major LLM via API and is the go-to choice for developers who want full control without a GUI.

Best signalOpen-source power users get a lot of control

Pricing and specs

Static facts from the Ruling catalog, not prototype estimates.

Top review for each

Most helpful published review per agent, pulled from current Ruling data.

Browse all reviews →

Top review↓ most helpful

Ruling Editorial — Engineering

Ruling editorial benchmark · last 30 days

Fast full-stack prototypes with token economics to watch

Ruling editorial benchmark: Bolt.new is one of the fastest browser-based paths from a prompt to a running web application because generation, runtime, hosting, and backend services are integrated. It is especially useful for prototypes, internal tools, and founder-led MVP exploration with no local setup. Larger projects consume more tokens as file context grows, so production hardening, architecture review, and plan economics become the main constraints after the first demo.

↑ 22 found helpfulRead →

Ruling Editorial — Engineering

Ruling editorial benchmark · older signal · Mar 18, 2026

Open-source power users get a lot of control

Ruling editorial benchmark: Aider is a strong fit for developers who like explicit git-native workflows and want to bring their own model keys. The command-line experience gives more control than most IDE agents, especially for patch review and commit discipline. The tradeoff is setup complexity and a steeper onboarding curve for teams that expect a polished GUI.

↑ 22 found helpfulRead →

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2 reviews

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