API cost decision in 10 seconds

Gemini 3.1 Pro Preview Custom Tools vs Olmo 3 32B Think

Pick Olmo 3 32B Think for lower cost; pick Gemini 3.1 Pro Preview Custom Tools only if the larger context window matters more.

Page updated: 2026-05-26T10:03:26Z Data confirmed: 2026-05-26T12:43:06Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Olmo 3 32B Think for lower cost; pick Gemini 3.1 Pro Preview Custom Tools only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Olmo 3 32B Think is estimated at $0.4 vs $8 for Gemini 3.1 Pro Preview Custom Tools, saving $7.6 (95% lower).

Cost-first pickOlmo 3 32B Think

Context-first pickGemini 3.1 Pro Preview Custom Tools

Sample savings$7.695%

10x traffic gap$76

Gemini 3.1 Pro Preview Custom Tools has more context, but Olmo 3 32B Think saves $7.6 on the standard workload. At 10x that traffic, the same price gap is about $76. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Olmo 3 32B Think stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Gemini 3.1 Pro Preview Custom Tools	Olmo 3 32B Think
Input-heavy / RAG	5M input + 500K output	Olmo 3 32B Think	$16	$1
Balanced workload	1M input + 1M output	Olmo 3 32B Think	$14	$0.65
Output-heavy chatbot	1M input + 5M output	Olmo 3 32B Think	$62	$2.65

Cheaper input Olmo 3 32B Think $2 vs $0.15 / 1M

Olmo 3 32B Think is $1.85 cheaper per 1M input tokens (92.5% lower; 13.3x difference).

Cheaper output Olmo 3 32B Think $12 vs $0.5 / 1M

Olmo 3 32B Think is $11.5 cheaper per 1M output tokens (95.8% lower; 24x difference).

Larger context Gemini 3.1 Pro Preview Custom Tools 1.05M vs 65.54K

Gemini 3.1 Pro Preview Custom Tools has 983.22K more context (16x larger).

Sample workload Olmo 3 32B Think $8 vs $0.4

Olmo 3 32B Think is $7.6 cheaper on the standard workload (95% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Gemini 3.1 Pro Preview Custom Tools Calculating… Estimated API cost

Olmo 3 32B Think 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

Olmo 3 32B Think has the lower input price; Olmo 3 32B Think has the lower output price; Gemini 3.1 Pro Preview Custom Tools offers the larger context window. For the 1M input plus 500K output sample, Olmo 3 32B Think is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $8 for Gemini 3.1 Pro Preview Custom Tools and $0.4 for Olmo 3 32B Think.

Best Fit

Choose Gemini 3.1 Pro Preview Custom Tools when you care most about larger context window.

Choose Olmo 3 32B Think 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, Olmo 3 32B Think is estimated at $0.4 vs $8 for Gemini 3.1 Pro Preview Custom Tools, saving $7.6 (95% lower).
Olmo 3 32B Think is $7.6 cheaper on the standard workload (95% lower).
Olmo 3 32B Think is $1.85 cheaper per 1M input tokens (92.5% lower; 13.3x difference).
Olmo 3 32B Think is $11.5 cheaper per 1M output tokens (95.8% lower; 24x difference).
Gemini 3.1 Pro Preview Custom Tools has 983.22K more context (16x larger).

Head-to-Head Specs

Feature	Gemini 3.1 Pro Preview Custom Tools (Google)	Olmo 3 32B Think (AllenAI)
Input Price prompt tokens per 1M	$2	$0.15
Completion Price per 1M tokens	$12	$0.5
Sample Workload Cost 1M input + 500K output	$8	$0.4
Context Window	1.05M	65.54K
Release Date	2026-02-25	2025-11-21

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Olmo 3 32B Think	On the standard 1M input plus 500K output workload, Olmo 3 32B Think is estimated at $0.4 vs $8 for Gemini 3.1 Pro Preview Custom Tools, saving $7.6 (95% lower).
High-volume input processing	Olmo 3 32B Think	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Olmo 3 32B Think	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Gemini 3.1 Pro Preview Custom Tools	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 Gemini 3.1 Pro Preview Custom Tools when lower sample workload cost matters most: $0.
Gemma 4 31B (free) can replace Gemini 3.1 Pro Preview Custom Tools when lower sample workload cost matters most: $0.
Lyria 3 Pro Preview can replace Gemini 3.1 Pro Preview Custom Tools when lower sample workload cost matters most: $0.
Lyria 3 Clip Preview can replace Gemini 3.1 Pro Preview Custom Tools 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

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Larger context alternatives

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Provider catalogs

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Google catalog

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AllenAI catalog

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