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openaiopenai·Mar 5, 2026

OpenAI: GPT-5.4

openai/gpt-5.4
context
1.1M
Max Output
128K
Input / 1M
$2.50
Output / 1M
$15.00

About

GPT-5.4 is OpenAI's frontier model that unifies the Codex and GPT lines into a single system. It provides a 1M+ token context window (roughly 922K input, 128K output) and accepts text and image inputs, enabling high-context reasoning, coding, and multimodal analysis in one workflow. The model adds native computer use and tool search, reporting 75.0% on OSWorld-Verified and 57.7% on SWE-Bench Pro; tool search loads tool definitions on demand and reduced total token usage by 47% in MCP testing. It is positioned as a strong default for both general-purpose tasks and software engineering. For inputs above 272K tokens, pricing applies a higher per-token rate for the full session.

Capabilities

Context Length
1.1M
Max Output
128K
Reasoning
Yes
In
text, image, file
Out
text

Benchmarks

View leaderboard
51.4#9 of 133
Intelligence Index
57.2#2 of 118
Coding Index

Reasoning & Knowledge

GPQA Diamond92.0%
HLE41.6%

Coding & Agentic

SciCode56.6%
Terminal-Bench Hard57.6%

Source: Artificial Analysis

Pricing

Full pricing
Type≤272K>272K
Input$2.50$5.00
Output$15.00$22.50
Cache Read$0.25$0.50
Web Search$0.01 / call

API

API reference

OpenAI-compatible · Model ID openai/gpt-5.4

curl https://api.elliotgate.com/v1/chat/completions \
  -H "Authorization: Bearer sk-omg-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.4",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

OFTEN COMPARED

GPT-5.4 comparisons

Decide which model wins on the dimensions that matter for your workload — context, benchmarks, pricing, or serving latency.