GPT-5 vs Claude 4.6
Frontier reasoning showdown — OpenAI's flagship versus Anthropic's most reliable model.
Cheapest
GPT-5
$2.50 / 1M tok
Highest quality
Claude 4.6
9.4 / 10
Best V-Index
GPT-5
3.68
| Dimension | GPT-5 | Claude 4.6 |
|---|---|---|
| Vendor | OpenAI | Anthropic |
| Input price ($ / 1M tok) | $2.50 | $3.00 |
| Quality (1–10) | 9.2 | 9.4 |
| V-Index (Quality ÷ Price) | 3.68 | 3.13 |
| reasoning precision | High | High |
| coding precision | High | High |
| creative precision | High | High |
| factual precision | High | High |
| summarization precision | High | High |
| extraction precision | High | High |
Verdict
For raw value-per-token, GPT-5 wins on V-Index (3.68 vs 3.13). For absolute quality on reasoning-heavy work, Claude 4.6 is the safer pick. Run your real prompt through the auditor below to see which one wins for your specific workload.
Scaling Roadmap
To scale your prompt engineering workflow: 1. Audit (1-2 days) to identify the optimal model. 2. Implement via API (3-5 days) using the chosen model. 3. Monitor V-Index drift (ongoing) as new models release.
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