Codex vs Tabnine: Side-by-Side Comparison 2026
Codex vs Tabnine comparison 2026. Side-by-side features, pricing & capabilities.
| Feature | Codex | Tabnine |
|---|---|---|
| Category | Agent | Extension |
| Starting Price | Free | $12/mo |
| Model Family | GPT / Codex | Multi-model |
| Context Window | 400K | Not disclosed |
| Code Completion | ✓ | ✓ |
| Chat | ✓ | ✓ |
| Inline Editing | ✓ | ✓ |
| Agentic Mode | ✓ | ✓ |
| Multi-File Editing | ✓ | ✓ |
| Terminal Commands | ✓ | ✗ |
| Browser Use | ✗ | ✗ |
| Test Generation | ✓ | ✓ |
| Debugging | ✓ | ✓ |
| Refactoring | ✓ | ✓ |
| Code Review | ✓ | ✓ |
| PR Review | ✓ | ✗ |
| Documentation | ✓ | ✓ |
| Image to Code | ✗ | ✗ |
| Voice Input | ✗ | ✗ |
| App Generation | ✓ | ✗ |
| Deployment | ✗ | ✗ |
| Git Integration | ✓ | ✗ |
| Supported IDEs | Codex App, VS Code, CLI | VS Code, JetBrains (all), Eclipse, Visual Studio 2022, Vim/Neovim |
| Open Source | Yes (CLI) | No |
Pricing verified 2026-02-05. Codex pricing | Tabnine pricing
Overview
Codex is ai agent from OpenAI. Tabnine is editor extension from Tabnine. Both tools are actively maintained as of 2026.
Codex: What You Get
Codex — AI Coding Agent from OpenAI. App / CLI / IDE.
- Code completions
- AI chat
- Agentic mode
- Multi-file editing
- Terminal commands
- Test generation
- Debugging
- Code review
- Git integration
- App generation
Pricing: Free / $8/mo. 6 plans available.
Models: GPT-5.3-Codex, Codex-mini-latest
Tabnine: What You Get
AI code assistant focused on privacy and enterprise use, with local model options and team-trained AI.
- Code completions
- Chat
- Local model option
- Team training
- Privacy-first
Pricing: $12/mo. 2 plans available.
Models: Claude 3.5 Sonnet, GPT-4.1, GPT-4o, GPT-5, Gemini 2.0 Flash, Gemini 2.5 Pro, Qwen 2.5, Llama 3.3, Mistral 7B
Key Differences
- Category: Codex is ai agent, Tabnine is editor extension.
- Free tier: Codex has a free tier; Tabnine does not.
- Model family: Codex uses GPT / Codex; Tabnine uses Multi-model.
Which Should You Choose?
Choose Codex if you want Codex handles multi-step tasks independently. Choose Tabnine if you want Local models keep code off the cloud. Both tools are strong options — the right choice depends on your workflow and priorities.
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