Choosing a Tool
No single tool wins every task. Match the tool to the job, not the hype cycle.
Decision Matrix
| Need | Best fit | Why |
|---|---|---|
| Tab completions while typing | GitHub Copilot | Lowest friction; accept/reject per line |
| Multi-file features in an IDE | Cursor or Devin Desktop | Repo indexing, visual diffs, agent modes |
| OpenAI models + Codex agent | OpenAI Codex | CLI, IDE, cloud; pairs with ChatGPT plans |
| Terminal / SSH / headless | Claude Code or Codex CLI | No GUI; scriptable; CI-friendly |
| Multi-agent orchestration | Devin Desktop | Kanban of local + cloud agents; ACP for Codex/Claude |
| Google Cloud / Android Studio | Gemini Code Assist | Native IDE extensions; Enterprise customization |
| AWS-native development | Amazon Q Developer | Bedrock-backed; @workspace; IAM-aware |
| Team policy + existing VS Code | Copilot Business | Fits current editor; enterprise controls |
| Custom product with chat UI | LLM APIs | You own UX, auth, and data flow |
| External data (DB, APIs, tickets) | MCP servers | Works with Cursor, Claude Code, Codex, others |
Tool Comparison at a Glance
| Tool | Interface | Model vendor | Standout strength |
|---|---|---|---|
| Cursor | AI IDE | Multi-model | Plan → Agent, @-mentions, rules |
| Claude Code | Terminal CLI | Anthropic | Hooks, skills, SDK in CI |
| OpenAI Codex | CLI + IDE ext | OpenAI | Codex cloud, /review, GitHub Action |
| Copilot | IDE plugin | Multi-model | Widest deployment; inline completions |
| Gemini Code Assist | IDE plugin | GCP/Android; Enterprise code customization | |
| Devin Desktop | AI IDE | Multi (ACP) | Agent Command Center; Devin Cloud |
| Amazon Q | IDE + CLI | AWS Bedrock | AWS context, security scan, transformations |
| Cline | VS Code ext | BYO API | Open-source agent + MCP |
| Aider | Terminal | BYO API | Git-native commits, repo map |
| Continue.dev | IDE ext | BYO / local | Multi-IDE config.yaml |
| Sourcegraph Cody | IDE ext | Enterprise search | Monorepo codebase context |
Also worth evaluating: Cline (open-source VS Code agent), Aider (terminal git-centric pair programmer), Continue.dev (VS Code + JetBrains), Zed AI, JetBrains AI Assistant, and Sourcegraph Cody (codebase search context).
By Experience Level
Junior developers: Start with Copilot inline + Ask mode (Cursor, Copilot Chat, or Gemini chat). Learn to verify output before leaning on agents.
Mid-level: Add Plan → Agent loops for features. Invest in project rules early.
Senior / leads: Claude Code or Codex for automation, MCP for org-specific tools, SDK agents in CI. Define team verification standards.
By Task Type
| Task | Recommendation |
|---|---|
| Boilerplate components | Copilot inline |
| Bug fix with stack trace | Cursor Agent, Claude Code, or Codex with error pasted |
| Greenfield module | Cursor Plan → Agent or Devin Desktop Spaces |
| OpenAI-only org | Codex CLI + OpenAI API for product |
| Java / AWS migration | Amazon Q transformations |
| Android feature work | Gemini Code Assist in Android Studio |
| Security-sensitive auth | Human-led; AI for drafts only; strict review |
| CSS / layout polish | Human-led; AI often misses visual nuance |
| Docs and comments | Any chat tool; verify accuracy |
| Production AI feature | LLM APIs + web app guides |
By Cloud Ecosystem
| Primary cloud | IDE assistant | Product API |
|---|---|---|
| AWS | Amazon Q Developer | Bedrock via Platforms |
| GCP | Gemini Code Assist | Vertex AI / Gemini API |
| Azure | Copilot + Azure tooling | Azure OpenAI |
| Vendor-neutral | Cursor, Codex, Copilot | Direct LLM APIs |
Cost Considerations
- Copilot Pro: predictable monthly fee for completions
- Cursor: subscription plus usage-based premium models
- Claude Code: tied to Anthropic API or Max plan limits
- Codex: included in ChatGPT plans or API usage
- Gemini Code Assist: free/Pro individual tiers migrating to Antigravity (June 2026); Standard/Enterprise continue
- Devin Desktop: Windsurf subscription carries over after rebrand
- Amazon Q Developer: free tier (Builder ID) plus Pro per user
- Raw APIs: pay per token; cheapest for batch, expensive if unmanaged in prod
See Cost, Latency, and Tokens.
You Can Use Multiple Tools
Common stack:
- Copilot for daily typing
- Cursor or Devin Desktop for feature branches
- Claude Code or Codex for release scripts and CI
- APIs for user-facing product features
The skills transfer: prompting, context, and verification matter more than which logo is on the box.
For Teams: Procurement and Security Questionnaire
Use this table when evaluating vendors with security and legal. Primary sources are linked below. Confirm current terms before purchase.
| Question | Cursor | Copilot Enterprise | Claude Code / API | Codex / OpenAI | Gemini Enterprise | Amazon Q Pro |
|---|---|---|---|---|---|---|
| Data retention for training? | Cursor Privacy | Copilot Trust Center | Anthropic Privacy | OpenAI Policies | Google Cloud terms | AWS Q privacy |
| SOC 2 / enterprise controls? | Business plan | Enterprise plan | Anthropic enterprise | Business / Enterprise | Standard / Enterprise | Pro / Enterprise |
| SSO / SCIM? | Business | Enterprise | Enterprise | Enterprise | Enterprise | IAM Identity Center |
| On-prem / air-gap? | No | No | Limited | No | No | No. See Platforms |
| Audit logs? | Business admin | Enterprise audit | API dashboards | Usage dashboards | Cloud audit logs | CloudTrail / admin |
Procurement checklist
- [ ] Legal reviewed IP and suggestion ownership
- [ ] Security reviewed data flow diagram (code → vendor → model)
- [ ] Approved regions for inference documented
- [ ] Fallback if vendor outage (degraded mode without AI)
- [ ] Published Team AI Policy naming approved tools
- [ ] Contractor access scoped (read-only repos, no prod secrets)
When to choose enterprise plans
| Signal | Action |
|---|---|
| Customer requires SOC2 evidence | Copilot Enterprise, Cursor Business, or cloud vendor enterprise tier |
| Code must not train public models | Disable training in vendor settings; verify contract |
| Regulated industry (health, finance) | Legal + BAA/DPA review before any cloud AI |
| Mixed editors (VS Code + JetBrains) | Copilot Business or Gemini Code Assist cover both; Cursor is IDE-specific |
| AWS-only engineering | Amazon Q Developer Pro + Bedrock governance |
References: GitHub Copilot Plans, Cursor Pricing, Anthropic for Business, OpenAI Codex, Gemini Code Assist, Amazon Q Developer.