CtrlAltDebrief

GPT-4o vs GPT-5.4

API pricing, context window and capabilities for GPT-4o and GPT-5.4, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.

Verdict

computed from the published numbers

GPT-4o wins on price. GPT-5.4 wins on intelligence and on context window. Benchmark data is unavailable for one or both models.

Price
GPT-4o
Terminal-Bench
Not called
Intelligence
GPT-5.4
Context window
GPT-5.4

Key takeaways

who wins on what, from the published numbers

GPT-4o wins

  • Cheaper output ($10.00 vs $15.00 /1M)
  • Supports audio

GPT-5.4 wins

  • Larger context window (131K vs 1.1M)
  • Higher max output (16K vs 128K)
  • Has reasoning mode
  • Has web search
Cheaper overall
GPT-4o
$2.50 + $10.00 /1M
Larger context
GPT-5.4
1.1M
More providers
Tied

Pricing & specs

cheapest listed route · per 1M tokens
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower.
GPT-4oGPT-5.4
Input $/1M$2.50via OpenAI $2.50via Databricks
Output $/1M$10.00via OpenAI best$15.00via OpenAI
Context window131K 1.1M best
Max output16K 128K best
Serving providers6 6
DateReleased May 13, 2024 Released Mar 5, 2026

Benchmarks

Benchmark scores, side by side
GPT-4oGPT-5.4
Intelligence8.4 39.0 best
Terminal-BenchNot available 78%
GPQA Diamond54% 92% best
Output speed150 t/s best92 t/s
Latency (TTFT)0.79s best192.30s

Cost calculator

choose a serving route for each side
Input tokens / month
Output tokens / month
GPT-4o
via Gmi
$23
GPT-5.4
via Databricks
$27

Capabilities

feature support, side by side
FeatureGPT-4oGPT-5.4
Vision✓✓
Tool use✓✓
Reasoning—✓
Audio✓—
Prompt caching✓✓
Structured output✓✓
Web search—✓

Related comparisons

Frequently asked questions

Which is cheaper, GPT-4o or GPT-5.4?
GPT-4o is cheaper for output ($10.00 vs $15.00 per 1M tokens) from OpenAI.
What is the context window difference between GPT-4o and GPT-5.4?
GPT-4o has a 131K-token context window and GPT-5.4 has 1.1M tokens, so GPT-5.4 can take a larger prompt.
How do GPT-4o and GPT-5.4 compare on benchmarks?
On the tracked benchmarks, GPT-5.4 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026

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