GPT-5 vs Claude Opus 4.8
Sample workload: short support reply (~512 output tokens). Open the calculator for your own prompt.
| Field | GPT-5 | Claude Opus 4.8 |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Accuracy | Exact | Approx |
| Input / 1M | $1.25/1M | $5.00/1M |
| Output / 1M | $10.00/1M | $25.00/1M |
| Sample input tokens | 16 | 25 |
| Sample request cost | $0.00514 | $0.012925 |
| Pages | Model page | Model page |
Try your own prompt
Sample costs above use a fixed support-chat prompt. For your text, open the main calculator with either model preselected.
GPT-5 in calculator · Claude Opus 4.8 in calculator · Count tokens (GPT-5) · Count tokens (Claude Opus 4.8) · All comparisons
How LLM pricing works · Exact vs Approx · GPT-5 page · Claude Opus 4.8 page