GPT-5.4 — API Pricing & Benchmarks
GPT-5.4 is OpenAI's previous-generation reasoning model, released in 2026-03. The API costs $2.50 per 1M input tokens and $15.0 per 1M output tokens ($5.63 blended at a 3:1 ratio), with cached input at $0.25. It supports a 1.1M-token context window. On the independently measured Artificial Analysis Intelligence Index it scores 53.1, ranking #24 of 68 models tracked on this site, with a median output speed of 150 tokens/sec.
Explore provider routes and additional benchmark sources for GPT-5.4
| Provider | OpenAI |
| Input price / 1M tokens | $2.50 |
| Output price / 1M tokens | $15.0 |
| Cached input / 1M tokens | $0.25 |
| Blended price (3:1) | $5.63 |
| Context window | 1.1M |
| Max output tokens | 128K |
| Knowledge cutoff | 2025-08 |
| License | proprietary |
| Input modalities | T+I |
| Output speed (tok/s) | 150 |
| Released | 2026-03 |
| Artificial Analysis Intelligence Index | 53.1 |
| LMArena Elo | 1470 |
| GPQA Diamond | 92% |
| SWE-bench Verified | 76.9% |
| Humanity's Last Exam | 43.7% |
Where GPT-5.4 fits
On a blended 3:1 basis GPT-5.4 costs $5.63 per 1M tokens, cheaper than 19% of the 80 priced models in this index. It is a previous-generation model: usually only worth choosing if you have an existing integration, negotiated pricing, or need its specific behavior, since newer siblings offer better price-performance. Cached input is priced at $0.25 (90% below standard input), which rewards prompt structures with long stable prefixes — see our caching guide.
Price history
| Period | Input $/1M | Output $/1M | Cached $/1M |
|---|---|---|---|
| 2026-07-18 → current | $2.50 | $15.0 | $0.25 |
No list-price changes recorded since tracking began. Full dataset: price-history.json (CC BY 4.0).
Alternatives at a similar price
- Claude Sonnet 4.6 (Anthropic) — $6.00/1M blended, AA Index 48.4
- Claude Sonnet 4.5 (Anthropic) — $6.00/1M blended
- Kimi K3 (Moonshot AI) — $6.00/1M blended, AA Index 59.7
- GPT-5.3 Codex (OpenAI) — $4.81/1M blended, AA Index 45.5
About OpenAI
OpenAI builds the GPT series. GPT-6 Astra (September 2026) sits at the top at $10/$50, and beneath it the GPT-5.6 generation ships in three sizes — Sol, Terra and Luna — that share the same 1.05M-token context window and tooling, so teams can move workloads between price points without changing integration code.