Claude Opus 4.6 vs GPT-5.4
Anthropic against OpenAI, costed on the same three workloads. GPT-5.4 is cheaper on all three workloads.
Run this comparison on your own numbers
Monthly bill, side by side
| Workload | Claude Opus 4.6 | GPT-5.4 | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$20,138 | $11,081 | $9,056 (1.8×) |
| Document summarizer 1,000 single-shot summaries a day |
$2,430 | $1,275 | $1,155 (1.9×) |
| Coding agent 200 twelve-turn sessions a day |
$14,040 | $7,470 | $6,570 (1.9×) |
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
| Claude Opus 4.6 | GPT-5.4 | |
|---|---|---|
| Input, per 1M tokens | $5 | $2.5 |
| Output, per 1M tokens | $25 | $15 |
| Cached input | $0.5 | $0.25 |
| Context window | 1M | 1.05M |
| Maximum output | 128K | 128K |
| Reasoning model | yes | yes |
| Vision | yes | yes |
Beyond the price
- GPT-5.4 reads up to 1.05M tokens of context in one request; Claude Opus 4.6 stops at 1M.
- Only GPT-5.4 offers a batch discount — 50% off both rates for work that can wait.
Run this comparison on your own numbers
Full detail: Claude Opus 4.6 pricing · GPT-5.4 pricing
More comparisons
Other head-to-heads that include Claude Opus 4.6 or GPT-5.4.
- Claude Opus 4.6 vs Gemini 3.1 Pro
- Claude Opus 4.6 vs GPT-5.5
- Claude Opus 4.6 vs GPT-5.6 Terra
- GPT-5.4 vs Claude Sonnet 4.6
- GPT-5.4 vs Claude Sonnet 5.5
- GPT-5.4 vs Claude Sonnet 5
Common questions
Which is cheaper, Claude Opus 4.6 or GPT-5.4?
GPT-5.4 is cheaper on all three workloads.
How much would Claude Opus 4.6 and GPT-5.4 cost each month?
On PromptSpend's standard workloads, per month: support chatbot: Claude Opus 4.6 $20,138, GPT-5.4 $11,081 (GPT-5.4 is cheaper by $9,056); document summarizer: Claude Opus 4.6 $2,430, GPT-5.4 $1,275 (GPT-5.4 is cheaper by $1,155); coding agent: Claude Opus 4.6 $14,040, GPT-5.4 $7,470 (GPT-5.4 is cheaper by $6,570). No prompt caching and no batch discount is assumed.
How do Claude Opus 4.6 and GPT-5.4 differ apart from price?
GPT-5.4 reads up to 1.05M tokens of context in one request; Claude Opus 4.6 stops at 1M. Only GPT-5.4 offers a batch discount — 50% off both rates for work that can wait.