CtrlAltDebrief

GPT-4o vs o1

API pricing, context window and capabilities for GPT-4o and o1, 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. o1 wins on intelligence and on context window. Benchmark data is unavailable for one or both models.

Price
GPT-4o
Terminal-Bench
Not called
Intelligence
o1
Context window
o1

Key takeaways

who wins on what, from the published numbers

GPT-4o wins

  • Cheaper input ($2.50 vs $15.00 /1M)
  • Cheaper output ($10.00 vs $60.00 /1M)
  • More serving providers (6 vs 5)
  • Supports audio

o1 wins

  • Larger context window (131K vs 200K)
  • Higher max output (16K vs 100K)
  • Has reasoning mode
Cheaper overall
GPT-4o
$2.50 + $10.00 /1M
Larger context
o1
200K
More providers
GPT-4o
6 providers

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-4oo1
Input $/1M$2.50via OpenAI best$15.00via OpenAI
Output $/1M$10.00via OpenAI best$60.00via OpenAI
Context window131K 200K best
Max output16K 100K best
Serving providers6 best5
DateReleased May 13, 2024 Released Dec 5, 2024

Benchmarks

Benchmark scores, side by side
GPT-4oo1
Intelligence8.4 15.2 best
GPQA Diamond54% 75% best
Output speed150 t/s Not available
Latency (TTFT)0.79s Not available

Cost calculator

choose a serving route for each side
Input tokens / month
Output tokens / month
GPT-4o
via Gmi
$23
o1
via Azure
$135

Capabilities

feature support, side by side
FeatureGPT-4oo1
Vision✓✓
Tool use✓✓
Reasoning—✓
Audio✓—
Prompt caching✓✓
Structured output✓✓
Web search——

Related comparisons

Frequently asked questions

Which is cheaper, GPT-4o or o1?
GPT-4o is cheaper for input ($2.50 vs $15.00 per 1M tokens) from OpenAI. GPT-4o is cheaper for output ($10.00 vs $60.00 per 1M tokens) from OpenAI.
What is the context window difference between GPT-4o and o1?
GPT-4o has a 131K-token context window and o1 has 200K tokens, so o1 can take a larger prompt.
How do GPT-4o and o1 compare on benchmarks?
On the tracked benchmarks, o1 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026

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