AI Observatory / Model Radar
OpenAI / openai/gpt-5.4
OpenAI: GPT-5.4
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...
1,050,000
Context
128,000
Max output
$2.50 / 1M
Prompt price
2026-03-05
Created
01 / Snapshot
Pricing, context, modalities, and parameters.
Model Radar detail pages stay neutral and operator-readable: core metadata first, then workflow fit.
| Provider | OpenAI | Input modalities | text, image, file |
|---|---|---|---|
| Output modalities | text | Prompt price | $2.50 / 1M |
| Completion price | $15.00 / 1M | Request price | N/A |
| Context length | 1,050,000 | Max completion tokens | 128,000 |
| Supported parameters | include_reasoning, max_completion_tokens, max_tokens, reasoning, response_format, seed, structured_outputs, tool_choice, tools | ||
Best for
openai/gpt-5.4
OpenAI: GPT-5.4
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...
Coding workflows
Cross-modal work
Long context
new
vision
tool-capable
long-context
03 / Colophon
Routes and exits.
Each model page stays simple: overview, compare, related models, then back to the public hub.