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GPT-5.4

OpenAI · GPT-5

Current high-capability GPT-5 tier for difficult professional tasks, coding, and longer agent workflows.

Part of GPT family · Other versions: GPT-5.3-Codex , GPT-5.3 , GPT-5.4-Pro , GPT-5.2-Codex , GPT-5.2-Pro , GPT-5.2 , GPT-5-Codex , GPT-5 nano , GPT-5 mini , GPT-5 , GPT-4.1 , GPT-4o mini Transcribe , GPT-4o mini TTS , GPT-4o Transcribe , GPT-4o mini , GPT-4o
Type
language
Context
400K tokens
Max Output
128K tokens
Status
current
Input
$2.5/1M tok
Output
$20/1M tok
API Access
Yes
License
proprietary
reasoning coding agentic tool-use long-context professional-workflows
Released March 2026 · Updated March 6, 2026

Overview

Freshness note: Model capabilities, limits, and pricing can change quickly. This profile is a point-in-time snapshot last verified on March 6, 2026.

GPT-5.4 is OpenAI’s current mainline high-capability GPT-5 model. OpenAI presents it as the reasoning-focused successor in the family for difficult real-world work, longer workflows, and higher-reliability coding or analysis tasks.

Capabilities

GPT-5.4 is intended for hard professional tasks: deeper analysis, longer agent loops, higher-quality drafting, and coding work where the cost of a weak answer is materially higher than on day-to-day assistant tasks. It is a plausible default for premium production assistants that still need broad generality.

Technical Details

OpenAI’s model docs list GPT-5.4 with a 400K context window and 128K max output. OpenAI Academy describes it as the GPT-5 family option for harder, longer workflows, and the Codex documentation frames GPT-5.4 as building on the GPT-5.3-Codex line for code-heavy tasks.

Pricing & Access

Published API pricing (per 1M tokens):

  • Input: $2.50
  • Output: $20.00

OpenAI lists GPT-5.4 in the API and also describes availability across ChatGPT and Codex product surfaces.

Best Use Cases

Use GPT-5.4 for production assistants, decision-support workflows, high-value coding tasks, and longer-running tool-use chains where better reasoning quality justifies a higher price than GPT-5.3 or GPT-5 mini.

Comparisons

  • GPT-5.3 (OpenAI): Better value for everyday workloads; GPT-5.4 is the stronger choice for harder tasks.
  • GPT-5.4-Pro (OpenAI): Pro pushes further on depth and quality but at a steep premium.
  • Claude Opus 4.6 (Anthropic): Another top-tier option for complex reasoning and coding workloads.