GPT-5 vs Claude Opus 4.7 for javascript: which is better in 2026?
A head-to-head look at GPT-5 and Claude Opus 4.7 for javascript. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For javascript in May 2026, Claude Opus 4.7 edges out GPT-5 on the codingIndex metric. Best-in-class agentic coding.
Side-by-side specs
| Spec | GPT-5 | Claude |
|---|---|---|
| Intelligence index | 78.4 | 76.9 |
| Coding index | 76.1 | 82.3 |
| Context window | 400K tokens | 1M tokens |
| Speed (tok/s) | 142 | 88 |
| Input $/M | $5.00 | $15.00 |
| Output $/M | $20.00 | $75.00 |
| Released | Aug 7, 2025 | Apr 23, 2026 |
How they handle javascript
GPT-5: Top reasoning and math scores. The main caveat is more expensive than mid-tier models.
Claude Opus 4.7: Best-in-class agentic coding. The main caveat is premium pricing on output tokens.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- GPT-5: $23.50 per 1,000 queries
- Claude Opus 4.7: $82.50 per 1,000 queries
Verdict by sub-task
- Best raw quality on javascript:
- Best price: GPT-5
- Longest context: Claude Opus 4.7
- Fastest: GPT-5
FAQ
Is GPT-5 better than Claude Opus 4.7 for javascript?
On May 2026 benchmarks (artificialanalysis.ai), Claude Opus 4.7 ranks higher than GPT-5 for javascript on the codingIndex metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, GPT-5 or Claude Opus 4.7?
GPT-5 costs $5.00 input and $20.00 output per million tokens. Claude Opus 4.7 costs $15.00 input and $75.00 output per million tokens.
Can I use both GPT-5 and Claude in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run GPT-5 and Claude Opus 4.7 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
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