Comparison · under IB-CODE-2026.2
Aider vs Grok Build
| Aider | Grok Build | |
|---|---|---|
| Vendor | Paul Gauthier (OSS, Apache 2.0) | xAI |
| Pricing | Free OSS + API tokens; $30-60/mo typical at moderate use with Sonnet 4.6 | SuperHeavy intro $99/mo for first 6 months (then $299/mo); API at $0.20 / $1.50 per Mtok in/out |
| Default model | Model-agnostic; community default claude-sonnet-4-6 or GPT-5.5; 100+ providers | Grok 3.5 (Grok Build proprietary fine-tune); 256K context; 70.8% SWE-bench Verified |
| CLI surface | ✓ | ✓ |
| Eval status | queued | deferred |
Comparison pending — neither side evaluated yet
Both Aider and Grok Build are currently unevaluated under IB-CODE-2026.2. This page will update as evaluations land.
Want this comparison sooner? Vendors can commission an evaluation to bump their tool up the queue (with full editorial independence on the verdict). Readers can email hello@indiebench.dev to vote for which comparison ships next.
About each tool
Aider
Aider is the reference implementation of BYOK CLI coding agents. Deepest git integration in the category: auto-commit per change, smart context windows from the repo map, reproducible CI runs. Pip-installable, model-agnostic, no telemetry. Star growth has slowed as OpenCode picks up community attent…
Grok Build
Grok Build launched May 14 2026 in early beta — xAI's entry in the agentic coding CLI category. The novel feature is multi-agent arena mode: up to 8 concurrent sub-agents working on parallel branches with a coordinator selecting the best result. Pricing is the steepest in this list for individual us…