Nova 2 Pro vs GPT-5.1
Amazon against OpenAI, costed on the same three workloads. GPT-5.1 is cheaper on all three workloads.
Monthly bill, side by side
| Workload | Nova 2 Pro | GPT-5.1 | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$11,468 | $6,553 | $4,915 (1.7×) |
| Document summariser 1,000 single-shot summaries a day |
$1,221 | $698 | $523 (1.8×) |
| Coding agent 200 twelve-turn sessions a day |
$7,324 | $4,185 | $3,139 (1.8×) |
No prompt caching and no batch discount on either side, so the comparison is like for like. Both figures assume 30 days a month.
The rate cards
| Nova 2 Pro | GPT-5.1 | |
|---|---|---|
| Input, per 1M tokens | $2.1875 | $1.25 |
| Output, per 1M tokens | $17.5 | $10 |
| Cached input | $0.5469 | $0.125 |
| Context window | 1M | 272K |
| Maximum output | 64K | 128K |
| Reasoning model | yes | yes |
| Vision | yes | yes |
Run this comparison on your own numbers
Full detail: Nova 2 Pro pricing · GPT-5.1 pricing