GPT-5.4 API Pricing: Cost Calculator & Real Examples (2026)
GPT-5.4 charges $2.50 per 1 million input tokens and $15.00 per 1 million output tokens. But per-token prices don't answer the real question: what will your workload cost per month? Below we compute it for three realistic scenarios — or run your own numbers with GPT-5.4 preselected.
| Meter | Price per 1M tokens |
|---|---|
| Input | $2.50 |
| Cached input | $0.25 |
| Output | $15.00 |
What does GPT-5.4 cost in practice?
| Monthly scenario | Token bill |
|---|---|
| Support chatbot (150k requests, 400 in / 300 out tokens) | $825.00 |
| Document workflow (22k runs, 3,000 in / 400 out tokens) | $297.00 |
| High-volume classifier (1M requests, 300 in / 10 out tokens) | $900.00 |
In the chatbot scenario, output is ~82% of the GPT-5.4 bill — capping response length (max tokens) is the most direct optimization. Document workflows are input-heavy, so the input rate dominates there.
Prompt caching savings
GPT-5.4 offers cached input at $0.25/1M (vs $2.50 standard). At a 60% cache-hit rate, the example chatbot drops from $825.00 to $744.00/month — saving $81.00. If your system prompt and context are stable, this discount is free money.
Is GPT-5.4 cheap or expensive?
On the same chatbot workload, GPT-5.4 is cheaper than 3 of the 13 models we track (position 11 of 14, cheapest to priciest). The nearest cheaper alternative is GPT-5.6 Terra ($825.00/month on the same scenario). One step up: Claude Opus 4.8 ($1,425.00/month). The right decision isn't absolute price but the cheapest model that meets your quality bar — test before overpaying.
FAQ
How much does GPT-5.4 cost per 1M tokens?
$2.50 per 1M input tokens and $15.00 per 1M output tokens (verified 2026-07-09).
What does a chatbot cost on GPT-5.4?
A 500-active-user chatbot (10 questions/day, 400 input + 300 output tokens per request) costs ~$825.00/month in tokens on GPT-5.4. Adjust the assumptions in the calculator.
Prices verified on 2026-07-09 against the provider's official pricing page. Estimates are for planning purposes only — always confirm current pricing with the provider.