API cost decision in 10 seconds

GPT-4o vs Gemma 3 12B

Pick Gemma 3 12B when budget and context both matter.

Page updated: 2026-05-26T15:08:08Z Data confirmed: 2026-05-26T18:08:02Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemma 3 12B when budget and context both matter.

On the standard 1M input plus 500K output workload, Gemma 3 12B is estimated at $0.11 vs $7.5 for GPT-4o, saving $7.39 (98.6% lower).

Cost-first pickGemma 3 12B

Context-first pickGemma 3 12B

Sample savings$7.3998.6%

10x traffic gap$73.95

Gemma 3 12B is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $73.95. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Gemma 3 12B stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	GPT-4o	Gemma 3 12B
Input-heavy / RAG	5M input + 500K output	Gemma 3 12B	$17.5	$0.27
Balanced workload	1M input + 1M output	Gemma 3 12B	$12.5	$0.17
Output-heavy chatbot	1M input + 5M output	Gemma 3 12B	$52.5	$0.69

Cheaper input Gemma 3 12B $2.5 vs $0.04 / 1M

Gemma 3 12B is $2.46 cheaper per 1M input tokens (98.4% lower; 62.5x difference).

Cheaper output Gemma 3 12B $10 vs $0.13 / 1M

Gemma 3 12B is $9.87 cheaper per 1M output tokens (98.7% lower; 76.9x difference).

Larger context Gemma 3 12B 128K vs 131.07K

Gemma 3 12B has 3.07K more context (1.02x larger).

Sample workload Gemma 3 12B $7.5 vs $0.11

Gemma 3 12B is $7.39 cheaper on the standard workload (98.6% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

GPT-4o Calculating… Estimated API cost

Gemma 3 12B Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Gemma 3 12B has the lower input price; Gemma 3 12B has the lower output price; Gemma 3 12B offers the larger context window. For the 1M input plus 500K output sample, Gemma 3 12B is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $7.5 for GPT-4o and $0.11 for Gemma 3 12B.

Best Fit

Choose GPT-4o when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Choose Gemma 3 12B when you care most about lower input-token price, lower output-token price, and larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Gemma 3 12B is estimated at $0.11 vs $7.5 for GPT-4o, saving $7.39 (98.6% lower).
Gemma 3 12B is $7.39 cheaper on the standard workload (98.6% lower).
Gemma 3 12B is $2.46 cheaper per 1M input tokens (98.4% lower; 62.5x difference).
Gemma 3 12B is $9.87 cheaper per 1M output tokens (98.7% lower; 76.9x difference).
Gemma 3 12B has 3.07K more context (1.02x larger).

Head-to-Head Specs

Feature	GPT-4o (OpenAI)	Gemma 3 12B (Google)
Input Price prompt tokens per 1M	$2.5	$0.04
Completion Price per 1M tokens	$10	$0.13
Sample Workload Cost 1M input + 500K output	$7.5	$0.11
Context Window	128K	131.07K
Release Date	2024-05-13	2025-03-13
Popularity	#101	#123

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Gemma 3 12B	On the standard 1M input plus 500K output workload, Gemma 3 12B is estimated at $0.11 vs $7.5 for GPT-4o, saving $7.39 (98.6% lower).
High-volume input processing	Gemma 3 12B	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Gemma 3 12B	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Gemma 3 12B	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

gpt-oss-120b (free) can replace GPT-4o when lower sample workload cost matters most: $0.
gpt-oss-20b (free) can replace GPT-4o when lower sample workload cost matters most: $0.
gpt-oss-20b can replace GPT-4o when lower sample workload cost matters most: $0.1.
gpt-oss-120b can replace GPT-4o when lower sample workload cost matters most: $0.13.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
Owl Alpha offers 1.05M context with $0 sample workload cost.

Popular competitors

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Cheaper alternatives

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Provider catalogs

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OpenAI catalog

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Google catalog

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GPT-4o

GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gpt-4-turbo) while being twice as...

Gemma 3 12B

Gemma 3 introduces multimodality, supporting vision-language input and text outputs. It handles context windows up to 128k tokens, understands over 140 languages, and offers improved math, reasoning, and chat capabilities,...