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GPT-4o vs Gemini 3 Pro

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OpenAI · 128k context | Google · 1M context

Pricing Comparison

Metric	GPT-4o	Gemini 3 Pro
Input / 1M tokens	$2.5	$3.5
Output / 1M tokens	$10	$14
Cached input / 1M	$1.25	$0.875
Context window	128k	1M
Provider	OpenAI	Google

Cost Calculator

Input tokens

Output tokens

Requests/day

💰 GPT-4o saves $900.00/month (29% cheaper)

OGPT-4oCHEAPER

Per request$0.007500

Daily$75.00

Monthly$2,250.00

Yearly$27,375.00

GGemini 3 Pro

Per request$0.0105

Daily$105.00

Monthly$3,150.00

Yearly$38,325.00

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Choose GPT-4o when…

✓ Cheaper for RAG & document retrieval (lower input cost)
✓ 29% cheaper per input token
✓ Cheaper for generation-heavy workloads (lower output cost)
✓ Optimized for: Multimodal tasks

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Choose Gemini 3 Pro when…

✓ Larger context window (1M vs 128k) — better for long documents
✓ Cheaper cached price ($0.875 vs $1.25/1M)
✓ Optimized for: Production reasoning at scale

Related Comparisons

GPT-4o vs GPT-5 GPT-4o vs GPT-5 Mini GPT-4o vs GPT-4.1 GPT-4o vs GPT-4.1 Mini Gemini 3 Pro vs GPT-5 Gemini 3 Pro vs GPT-5 Mini