Anthropic Claude Sonnet 4.6 vs OpenAI GPT-5.4
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- Both accept prompts up to 1M tokens.
| Claude Sonnet 4.6 | GPT-5.4 | |
|---|---|---|
| Vendor | Anthropic | OpenAI |
| Released | 2026-02-17 | 2026-03-05 |
| Input / 1M | $3.00 | $2.50 |
| Output / 1M | $15.00 | $15.00 |
| Cached input / 1M | $0.30 | $0.25 |
| Blended / 1M (3:1) | $6.00 | $5.63 |
| Context | 1M | 1M |
| Max output | 128K | 128K |
| Accepts | text, image, file | text, image, file |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 9 | 7 |
| Cheapest provider, output | $15.00 | $15.00 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
Claude Sonnet 4.6
$405 per month$13.50 per day
GPT-5.4
$375 per month$12.50 per day
GPT-5.4 saves $30.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Claude Sonnet 4.6 with