OpenAI Codex vs Amazon CodeWhisperer
Compare coding AI Tools
OpenAI Codex
Coding agent and code generation assistant available via ChatGPT subscriptions and the OpenAI API with IDE CLI and web access for development tasks.
Amazon CodeWhisperer
AI coding companion from AWS now part of Amazon Q Developer, offering code suggestions, security scans and natural language to code across IDEs with a free tier and Pro.
Feature Tags Comparison
Only in OpenAI Codex
Shared
Only in Amazon CodeWhisperer
Key Features
OpenAI Codex
- • Agentic coding sessions in terminal IDE and web with logs and artifacts
- • GPT 5 Codex models focused on code review generation and refactoring
- • Pull request reviews with inline suggestions and explainers
- • Tests and bug fixes drafted from failing outputs and traces
- • CLI and extensions to connect repos private or cloud sandboxes
- • Responses API access to Codex models for programmatic control
Amazon CodeWhisperer
- • Contextual code suggestions in popular IDEs for many languages
- • Natural language to code and tests via Amazon Q Developer
- • Security scans to detect secrets and known risky APIs
- • Optimized snippets for AWS SDKs CLI and services
- • Support for Python JavaScript Java and more ecosystems
- • Per user Pro tier with higher limits and admin controls
Use Cases
OpenAI Codex
- → Draft new features from structured tickets with commit level traceability
- → Request refactors to modern patterns while preserving behavior
- → Generate tests from examples and failing logs to raise coverage
- → Review pull requests with inline reasoning and citation to changes
- → Explain unfamiliar code paths during onboarding or audits
- → Automate repetitive tasks like renames and boilerplate creation
Amazon CodeWhisperer
- → Speed up SDK usage for AWS services with correct patterns
- → Generate tests and boilerplate from natural language comments
- → Detect hardcoded secrets before code leaves your laptop
- → Enable juniors to learn API usage by example in IDE
- → Reduce copy paste from docs while keeping human review
- → Adopt a free tier for individuals then upgrade for teams
Perfect For
OpenAI Codex
software engineers data engineers platform teams educators and students who need guided coding help code review and safe automation inside familiar tools
Amazon CodeWhisperer
backend and cloud developers devops and data engineers building on AWS who want faster code suggestions tests and security checks
Capabilities
OpenAI Codex
Amazon CodeWhisperer
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