Agentic Index
Graphite vs Sonar (2026)
Both improve what happens around a pull request and they change different parts of it, at 6 and 12 of 14.
Sonar is the verification layer and the de facto standard for automated review, with a free tier and published cloud plans. Graphite rebuilds the workflow itself around stacked pull requests with a stack aware merge queue, plus an agent that reviews, chats, fixes and merges, free for a hobby tier. Sonar improves the review; Graphite changes how you ship, which is a bigger ask and a bigger payoff if stacked changes suit your team.
Choose Graphite if
- Large pull requests are the problem, and stacking is the workflow fix.
- A stack aware merge queue is infrastructure you currently do not have.
- An agent that merges as well as reviews closes the loop you care about.
Choose Sonar if
- Documented coverage is twice as deep and Sonar is likely already in your pipeline.
- You want better review without changing how your team branches and merges.
- A published free tier and cloud plans make adoption straightforward.
| At a glance | Graphite | Sonar |
|---|---|---|
| Category | Coding agent | Coding agent |
| Entry price | Free (Hobby: stacking CLI, VS Code, limited AI reviews) · Starter $20/user/mo annual · Team $40/user/mo annual (unlimited Graphite Agent + merge queue) · Enterprise custom | Free tier and 14 day trial; paid SonarQube Cloud plans priced by lines of code, self serve Team scaling to Enterprise |
| Free / trial | Free Hobby tier includes the stacking command line tool, the VS Code extension, and a limited amount of Graphite Agent AI review. Every paid plan includes a 30 day free trial that does not require a credit card. | Free tier for developers plus a 14 day Pro trial, no credit card; open source MCP server and IDE plugin are free |
| Pricing confidence | public exact | public partial |
| Feature | G Graphite |
S Sonar |
|---|---|---|
| Action & orchestration | ||
|
Integrations & Tool Calling Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools. |
Full / Explicit | Full / Explicit |
|
Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
Partial | Full / Explicit |
|
Triggers & Channel Coverage How agents wake up and where they work: schedules, webhooks, message events, CRM events, inbox events, chat, email, voice, and collaboration tools. |
Partial | Full / Explicit |
| Knowledge & context | ||
|
Knowledge Grounding & RAG Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers. |
Full / Explicit | Full / Explicit |
|
Memory & State Persistence Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer. |
No / Not documented | Partial |
| Control & trust | ||
|
Human Oversight & Guardrails Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls. |
Partial | Full / Explicit |
|
Security, Identity & Governance RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy. |
Partial | Full / Explicit |
|
Observability & Auditability Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior. |
Partial | Full / Explicit |
|
Deployment & Data Residency Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting. |
No / Not documented | Full / Explicit |
| Solution readiness | ||
|
Prebuilt Agents, Templates & Packs Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value. |
No / Not documented | Full / Explicit |
| Platform extensibility | ||
|
Model Flexibility & Routing Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys. |
No / Not documented | Partial |
|
APIs, SDKs & MCP Extensibility Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems. |
No / Not documented | Full / Explicit |
|
Testing, Debugging & Optimization Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment. |
Full / Explicit | Full / Explicit |
| Specialist automation | ||
|
Browser & Computer Use Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone. |
Partial | No / Not documented |
Pricing snapshot
Sourced from the Index pricing dataset · open each vendor's profile for full detail.
| Pricing | G Graphite |
S Sonar |
|---|---|---|
|
Entry price Lowest public entry point |
Free (Hobby: stacking CLI, VS Code, limited AI reviews) · Starter $20/user/mo annual · Team $40/user/mo annual (unlimited Graphite Agent + merge queue) · Enterprise custom | Free tier and 14 day trial; paid SonarQube Cloud plans priced by lines of code, self serve Team scaling to Enterprise |
|
Pricing confidence How public the numbers are |
Public — exact | Public — partial |
|
Billing Primary billing axis |
Per user per month subscription tiers billed annually, with a free tier and a 30 day trial. The Team tier includes unlimited AI reviews and chat with no per review metering; enterprise is custom. | lines of code |
|
Variable cost Workload / overage exposure |
Low variable cost | Medium variable cost |
|
Free tier / trial Try before you buy |
Free tierTrial
|
Free tierTrial
|
|
Buying motion Self-serve vs sales call |
Self-serve | Mixed |