Bug fixing + code review - Best AI Model Picks | eCommerce AI Wiki
Best AI model for bug fixing + code review: GPT-5.3 Codex. Debug issues, write tests, and review pull requests.
Bug fixing + code review (Technical). Debug issues, write tests, and review pull requests. Requirements: Reasoning + code. Best pick: GPT-5.3 Codex - Best debugging agent; can work across files and run tests. Alternative: Grok Code Fast 1 - Fast code review and bug identification. Budget pick: GPT-5.3 Codex-Spark - Quick fixes and test writing at low cost. Recommended models: GPT-5.2 Thinking, GPT-5.3 Codex, GPT-5.3 Codex-Spark, Gemini 3 Pro, Claude Opus 4.6, Claude Sonnet 4.5, Grok Code Fast 1. Use with caution: GPT-5.2 Instant, Gemini 3 Flash, Claude Haiku 4.5, Grok 4.1 Fast (Non-reasoning), Llama 4 Maverick (Instruct), Llama 4 Scout (Instruct). Roles: Engineering. Stacks: Shopify.