The Agents Index

AI code review tools

As of October 2026, Gemini Code Assist has the lowest paid entry price here, from $22.80/seat/month. CodeRabbit has a free plan.

Updated 24 October 20262 agents1 verified in the last 30 days1 updated in that window

Prices checked 15 September–24 October 2026

Reviewed by The Agents Index editorial team.

In A–Z order. How we rank →

This spot is open
Featured agents show here and first on related and alternatives pages.
- API access: Not stated
- Free tier: Not stated
- MCP server: Not stated
- Own API key: Not stated
- Open source: Not stated
- Self-hosted: Not stated
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CodeRabbit
AI code review across pull requests, IDE and CLI, with agentic fixes, pre-merge checks and security review.
Free, then $30/month
From
Free, then $30/month
- API access: Partly
- Free tier: Yes
- MCP server: No
- Own API key: Partly
- Open source: Not stated
- Self-hosted: Partly
Checked 15 September 2026
Visit CodeRabbitCompare CodeRabbit
Gemini Code Assist
Google's per-seat AI coding assistant and agent for IDEs, the terminal and GitHub pull requests.
From $22.80/seat/month
From
$22.80/seat/month
- API access: No
- Free tier: No
- MCP server: Partly
- Own API key: Partly
- Open source: Partly
- Self-hosted: No
Checked 18 October 2026
Visit Gemini Code AssistCompare Gemini Code Assist
List your agent
2 agents in AI code review
- Free to list
- Every fact sourced to your own pages
- Edit it from your dashboard
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Tools that review pull requests, comment on the diff and suggest fixes before you merge.

Questions buyers ask

Which agent here costs the least?

CodeRabbit has a free plan. The lowest paid plan is Gemini Code Assist, from $22.80/seat/month. Price checked on 24 October 2026.

Which agents here have a free plan?

1 of the 2: CodeRabbit.

When were these prices checked?

Between 15 September 2026 and 24 October 2026, each read on the maker's own pricing page.

Sources and method

Every price here was read on the maker's own pricing page.

CodeRabbit: coderabbit.ai/pricing, checked 15 September 2026
Gemini Code Assist: codeassist.google/products/business, checked 24 October 2026