API cost decision in 10 seconds

NewGoogle Gemini Pro Latest vs Gemma 4 31B

Pick Gemma 4 31B for lower cost; pick Google Gemini Pro Latest only if the larger context window matters more.

Pricing data updated: 2026-05-26T11:08:00Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Gemma 4 31B for lower cost; pick Google Gemini Pro Latest only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Gemma 4 31B is estimated at $0.3 vs $8 for Google Gemini Pro Latest, saving $7.7 (96.2% lower).

Cost-first pickGemma 4 31B

Context-first pickGoogle Gemini Pro Latest

Sample savings$7.796.2%

10x traffic gap$76.95

Google Gemini Pro Latest has more context, but Gemma 4 31B saves $7.7 on the standard workload. At 10x that traffic, the same price gap is about $76.95. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Gemma 4 31B stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Google Gemini Pro Latest	Gemma 4 31B
Input-heavy / RAG	5M input + 500K output	Gemma 4 31B	$16	$0.78
Balanced workload	1M input + 1M output	Gemma 4 31B	$14	$0.49
Output-heavy chatbot	1M input + 5M output	Gemma 4 31B	$62	$1.97

Cheaper input Gemma 4 31B $2 vs $0.12 / 1M

Gemma 4 31B is $1.88 cheaper per 1M input tokens (94% lower; 16.7x difference).

Cheaper output Gemma 4 31B $12 vs $0.37 / 1M

Gemma 4 31B is $11.63 cheaper per 1M output tokens (96.9% lower; 32.4x difference).

Larger context Google Gemini Pro Latest 1.05M vs 262.14K

Google Gemini Pro Latest has 786.43K more context (4x larger).

Sample workload Gemma 4 31B $8 vs $0.3

Gemma 4 31B is $7.7 cheaper on the standard workload (96.2% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Google Gemini Pro Latest Calculating… Estimated API cost

Gemma 4 31B 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 4 31B has the lower input price; Gemma 4 31B has the lower output price; Google Gemini Pro Latest offers the larger context window. For the 1M input plus 500K output sample, Gemma 4 31B is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $8 for Google Gemini Pro Latest and $0.3 for Gemma 4 31B.

Best Fit

Choose Google Gemini Pro Latest when you care most about larger context window.

Choose Gemma 4 31B when you care most about lower input-token price, and lower output-token price.

Decision Notes

On the standard 1M input plus 500K output workload, Gemma 4 31B is estimated at $0.3 vs $8 for Google Gemini Pro Latest, saving $7.7 (96.2% lower).
Gemma 4 31B is $7.7 cheaper on the standard workload (96.2% lower).
Gemma 4 31B is $1.88 cheaper per 1M input tokens (94% lower; 16.7x difference).
Gemma 4 31B is $11.63 cheaper per 1M output tokens (96.9% lower; 32.4x difference).
Google Gemini Pro Latest has 786.43K more context (4x larger).

Head-to-Head Specs

Feature	NewGoogle Gemini Pro Latest (Google)	Gemma 4 31B (Google)
Input Price prompt tokens per 1M	$2	$0.12
Completion Price per 1M tokens	$12	$0.37
Sample Workload Cost 1M input + 500K output	$8	$0.3
Context Window	1.05M	262.14K
Release Date	2026-04-27	2026-04-02

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Gemma 4 31B	On the standard 1M input plus 500K output workload, Gemma 4 31B is estimated at $0.3 vs $8 for Google Gemini Pro Latest, saving $7.7 (96.2% lower).
High-volume input processing	Gemma 4 31B	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Gemma 4 31B	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Google Gemini Pro Latest	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Gemma 4 26B A4B (free) can replace Google Gemini Pro Latest when lower sample workload cost matters most: $0.
Gemma 4 31B (free) can replace Google Gemini Pro Latest when lower sample workload cost matters most: $0.
Lyria 3 Pro Preview can replace Google Gemini Pro Latest when lower sample workload cost matters most: $0.
Lyria 3 Clip Preview can replace Google Gemini Pro Latest when lower sample workload cost matters most: $0.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
GPT-5.4 offers 1.05M context with $10 sample workload cost.

Popular competitors

No popular competitor is currently available.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

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Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

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Provider catalogs

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Google catalog

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Google Gemini Pro Latest

This model always redirects to the latest model in the Google Gemini Pro family.

Gemma 4 31B

Gemma 4 31B Instruct is Google DeepMind's 30.7B dense multimodal model supporting text and image input with text output. Features a 256K token context window, configurable thinking/reasoning mode, native function...