token.app › Compare › GPT-5 Pro vs Claude Sonnet 5
GPT-5 Pro vs Claude Sonnet 5
Claude Sonnet 5 leads on 2 of 2 shared benchmarks. Claude Sonnet 5 is 10× cheaper per token on a blended 3:1 basis. Claude Sonnet 5 accepts the larger context window (1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5 Pro | Claude Sonnet 5 | |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Input $/1M | $15.00 | $2.00 |
| Output $/1M | $120.00 | $10.00 |
| Blended $/1M | $41.25 | $4.00 |
| Context window | 400K | 1M |
| Max output | 128K | 128K |
| Released | Oct 2025 | Jun 2026 |
| Licence | Proprietary | Proprietary |
| FrontierMath T1–3 | 55.8% | 65.6% |
| FrontierMath T4 | 19.5% | 29.3% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose GPT-5 Pro if…
- No clear advantage on the data we hold.
Choose Claude Sonnet 5 if…
- Costs less per token — $4.00 vs $41.25 blended
- Higher FrontierMath T1–3 (65.6% vs 55.8%)
- Higher FrontierMath T4 (29.3% vs 19.5%)
- Larger context window (1M)
- Newer model (released Jun 2026)
FAQ
Which is better, GPT-5 Pro or Claude Sonnet 5?
Across the 2 benchmarks both models have independently-run scores for, GPT-5 Pro leads on 0 and Claude Sonnet 5 leads on 2. Benchmarks are one input — price and context window are on this page too.
Is GPT-5 Pro cheaper than Claude Sonnet 5?
Claude Sonnet 5 is cheaper: $4.00 versus $41.25 per million tokens blended at 3:1 input:output. Input alone: $15.00 vs $2.00. Output alone: $120.00 vs $10.00.
What context windows do GPT-5 Pro and Claude Sonnet 5 have?
GPT-5 Pro: 400,000 tokens. Claude Sonnet 5: 1,000,000 tokens.
Who makes GPT-5 Pro and Claude Sonnet 5?
GPT-5 Pro is made by OpenAI. Claude Sonnet 5 is made by Anthropic.