GPT-5.4
gpt-5.4
OpenAI · chat · api · seen 9m ago
Context
1.1M
Max output
128K
Input $/1M
$2.50
Output $/1M
$15.00
Modalities
text
Released
05 Mar 2026
AI summary
● machine-written
OpenAI releases GPT-5.4, unifying Codex and GPT into single frontier model
GPT-5.4 is OpenAI's latest frontier model released March 5, 2026, combining the Codex and GPT product lines into one system. It supports a 1M+ token context window with 128K max output and handles text and image inputs. The model is positioned as a strong default for general-purpose tasks and software engineering workloads.
What's new
- Unifies Codex and GPT lines into single system
- 1M+ token context window (922K input, 128K output)
- Supports multimodal inputs (text and images)
- Released with 10% pricing uplift for data residency access
Best for
High-context reasoning and document synthesisProduction-quality code generationComplex multi-step workflowsInstruction following and tool use