GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling high-context reasoning, coding, and multimodal analysis within the same workflow.
- By:
- OpenAI
- Input:
- Output:
- Context length:
- 1.05M
- Max output:
- 128K
- Published:
- 2026-03-05
Providers
Same model, different providers. Automatic routing picks the cheapest healthy one within the same quality tier.
| Provider | ||||
|---|---|---|---|---|
| 20% offazure | $2.5-5$2-4/1M tokens | $15-22.5$12-18/1M tokens | Read$0.25-0.5$0.2-0.4/1M tokensWrite— | 1.05M |
| 50% offLowestamux-special | $2.5-5$1.25-2.5/1M tokens | $15-22.5$7.5-11.25/1M tokens | Read$0.25-0.5$0.125-0.25/1M tokensWrite— | 1.05M |
Availability
24 hoursSuccess rate of the requests Amux actually sent to each provider. Client errors are excluded from the denominator — a malformed request isn't the provider's fault.
Throughput
24 hoursAverage output speed on streaming requests, in tokens per second (TPS).
Latency
24 hoursAverage time to first token (TTFT) on streaming requests — how long from sending a request to receiving its first token.
Activity
24 hoursToken usage and cost for this model over time, split by the provider that served each request.
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