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GPTvsGemini

GPT 3.5 Turbo (0125) vs Gemini 2.5 Pro

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

Pricing

Side-by-side pricing

GPT 3.5 Turbo (0125)

Fast / Budget

Gemini 2.5 Pro

Mid-tier
Input $/MTok
$0.50
$1.25
Output $/MTok
$1.50
$10.00
Cache discount
0% off
90% off
Context
16.385K
1,048.576K

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 3.5 Turbo (0125)
Gemini 2.5 Pro

Guidance

When to use GPT 3.5 Turbo (0125) vs Gemini 2.5 Pro

Choose GPT 3.5 Turbo (0125) when...

  • -Cost matters: 60% cheaper on input tokens

Choose Gemini 2.5 Pro when...

  • -You need a larger context window (1,048.576K vs 16.385K)
  • Similar performance; consider provider preference or ecosystem fit.

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 3.5 Turbo (0125)
Gemini 2.5 Pro
100K tokens
$0.08Cheaper
$0.39
1M tokens
$0.80Cheaper
$6.25
10M tokens
$8.00Cheaper
$62.50

FAQ

When should I use GPT 3.5 Turbo (0125) instead of Gemini 2.5 Pro?

GPT 3.5 Turbo (0125) and Gemini 2.5 Pro perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is Gemini 2.5 Pro cheaper than GPT 3.5 Turbo (0125)?

Gemini 2.5 Pro input costs $1.25/MTok, which is 150% more than GPT 3.5 Turbo (0125) at $0.50/MTok.

What are the context window sizes for GPT 3.5 Turbo (0125) and Gemini 2.5 Pro?

GPT 3.5 Turbo (0125) has a 16.385K token context window. Gemini 2.5 Pro has a 1,048.576K token context window.

Go deeper on either model

Per-call cost calculators, provider lineups, and price history for both models on this page.

GPT 3.5 Turbo (0125) pricing & benchmarks

$0.50 / $1.50 per MTok

GPT 3.5 Turbo (0125) cost calculator

All GPT models

GPT 3.5 Turbo (0125) pricing history

Gemini 2.5 Pro pricing & benchmarks

$1.25 / $10.00 per MTok

Gemini 2.5 Pro cost calculator

All Gemini models

Gemini 2.5 Pro pricing history

Other comparisons

How GPT 3.5 Turbo (0125) and Gemini 2.5 Pro stack up against the rest of the field.

GPT 3.5 Turbo (0125) vs Claude Opus 4.8

GPT 3.5 Turbo (0125) vs Claude Sonnet 4.6

GPT 3.5 Turbo (0125) vs Claude Haiku 4.5

Gemini 2.5 Pro vs Claude Opus 4.8

Gemini 2.5 Pro vs Claude Sonnet 4.6

Gemini 2.5 Pro vs Claude Haiku 4.5

Track your real costs

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

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