GPTvsGPT

GPT 4.1 vs GPT 5

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

GPT 4.1

Mid-tier

GPT 5

Mid-tier
Input $/MTok
$2.00
$1.25
Output $/MTok
$8.00
$10.00
Cache discount
75% off
90% off
Context
1,047.576K
272K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
GPT 4.1
GPT 5

Guidance

When to use GPT 4.1 vs GPT 5

Choose GPT 4.1 when...

  • -You need a larger context window (1,047.576K vs 272K)
  • Similar performance; consider provider preference or ecosystem fit.

Choose GPT 5 when...

  • -Cost matters: 38% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 4.1
GPT 5
100K tokens
$0.38Cheaper
$0.39
1M tokens
$3.80Cheaper
$3.88
10M tokens
$38.00Cheaper
$38.75

FAQ

When should I use GPT 4.1 instead of GPT 5?

GPT 4.1 and GPT 5 perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is GPT 5 cheaper than GPT 4.1?

Yes. GPT 5 input costs $1.25/MTok vs $2.00/MTok for GPT 4.1, saving 38% on input.

What are the context window sizes for GPT 4.1 and GPT 5?

GPT 4.1 has a 1,047.576K token context window. GPT 5 has a 272K token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.