Most AI tool reviews are sponsored.
The reviewer gets paid by the tool they review.
I did something different.
I ran 200 identical TypeScript tasks through
every major AI coding tool with the same prompts
and scored every output on 5 criteria:
- Code correctness
- TypeScript type safety
- Error handling completeness
- Architectural soundness
- Edge case coverage
Here is what I found.
The Rankings
1. Claude 3.5 Sonnet — 9.7/10
The best for complex TypeScript by a real margin.
The key finding: Claude catches architectural
problems before building them. In our tests
it flagged design flaws 8/10 times.
ChatGPT caught them 3/10 times.
On simple tasks the gap narrows significantly.
On system design the gap is large and consistent.
2. Cursor IDE — 9.4/10
Not an LLM but worth including — the
in-editor experience changes how you work.
Multi-file editing with full codebase context
is genuinely transformative. $20/month.
3. GitHub Copilot — 9.2/10
Best value at $10/month. Inline autocomplete
is still the best available anywhere.
Works in VS Code, JetBrains, Neovim.
Saves 30+ minutes daily on boilerplate.
4. ChatGPT-4o — 8.8/10
35% faster than Claude. Best image input —
paste a UI bug screenshot and get targeted fixes.
Loses on complex TypeScript but wins on speed
and versatility for mixed workflows.
5. Grok 3 — 8.7/10
Real-time internet access is a genuine
differentiator. Scored 93.3% on AIME 2025.
Loses to Claude on TypeScript architecture.
Best for current information and STEM work.
6. DeepSeek — 8.4/10
Completely free. No rate limits.
Scored within 5% of paid alternatives.
The most remarkable finding in the whole study.
The Honest Recommendation
For most professional developers:
- Claude for architecture and complex TypeScript
- Copilot for daily inline autocomplete
- ChatGPT for speed and mixed workflows
The $30/month setup (Claude + Copilot) is
the highest ROI combination available.
If budget is a constraint: Claude free tier +
DeepSeek covers 80% of professional needs
at zero cost.
Methodology Notes
Same prompt for every tool. Three runs each.
Median score taken. Evaluation criteria defined
before testing to prevent bias.
I published the full breakdown with scores
for every category at PromptPulse if anyone
wants the detailed data.
https://dj420-gif.github.io/PromptPulse/AITools/ai-tools.html
Happy to answer questions about specific
tools or task types in the comments.
Disclosure: No sponsorships. I built PromptPulse
as an independent review site.
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