API cost decision in 10 seconds

Olmo 3 32B Think vs GPT-5.1

Pick Olmo 3 32B Think for lower cost; pick GPT-5.1 only if the larger context window matters more.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Olmo 3 32B Think for lower cost; pick GPT-5.1 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 $6.25 for GPT-5.1, saving $5.85 (93.6% lower).

Cost-first pickOlmo 3 32B Think
Context-first pickGPT-5.1
Sample savings$5.8593.6%
10x traffic gap$58.5

GPT-5.1 has more context, but Olmo 3 32B Think saves $5.85 on the standard workload. At 10x that traffic, the same price gap is about $58.5. 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 shapeToken mixBetter pickOlmo 3 32B ThinkGPT-5.1
Input-heavy / RAG5M input + 500K outputOlmo 3 32B Think$1$11.25
Balanced workload1M input + 1M outputOlmo 3 32B Think$0.65$11.25
Output-heavy chatbot1M input + 5M outputOlmo 3 32B Think$2.65$51.25
Cheaper input Olmo 3 32B Think $0.15 vs $1.25 / 1M

Olmo 3 32B Think is $1.1 cheaper per 1M input tokens (88% lower; 8.33x difference).

Cheaper output Olmo 3 32B Think $0.5 vs $10 / 1M

Olmo 3 32B Think is $9.5 cheaper per 1M output tokens (95% lower; 20x difference).

Larger context GPT-5.1 65.54K vs 400K

GPT-5.1 has 334.46K more context (6.1x larger).

Sample workload Olmo 3 32B Think $0.4 vs $6.25

Olmo 3 32B Think is $5.85 cheaper on the standard workload (93.6% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Olmo 3 32B Think Calculating… Estimated API cost
GPT-5.1 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; GPT-5.1 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 $0.4 for Olmo 3 32B Think and $6.25 for GPT-5.1.

Best Fit

Choose Olmo 3 32B Think when you care most about lower input-token price, and lower output-token price.

Choose GPT-5.1 when you care most about larger context window.

Decision Notes
  • On the standard 1M input plus 500K output workload, Olmo 3 32B Think is estimated at $0.4 vs $6.25 for GPT-5.1, saving $5.85 (93.6% lower).
  • Olmo 3 32B Think is $5.85 cheaper on the standard workload (93.6% lower).
  • Olmo 3 32B Think is $1.1 cheaper per 1M input tokens (88% lower; 8.33x difference).
  • Olmo 3 32B Think is $9.5 cheaper per 1M output tokens (95% lower; 20x difference).
  • GPT-5.1 has 334.46K more context (6.1x larger).
Head-to-Head Specs
FeatureOlmo 3 32B Think
(AllenAI)		GPT-5.1
(OpenAI)
Input Price
prompt tokens per 1M		$0.15$1.25
Completion Price
per 1M tokens		$0.5$10
Sample Workload Cost
1M input + 500K output		$0.4$6.25
Context Window65.54K400K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionOlmo 3 32B ThinkOn the standard 1M input plus 500K output workload, Olmo 3 32B Think is estimated at $0.4 vs $6.25 for GPT-5.1, saving $5.85 (93.6% lower).
High-volume input processingOlmo 3 32B ThinkLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsOlmo 3 32B ThinkLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT-5.1A 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-5.1 when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace GPT-5.1 when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace GPT-5.1 when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace GPT-5.1 when lower sample workload cost matters most: $0.13.
Larger context near this budget

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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AllenAI catalog

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OpenAI catalog

Check other OpenAI models with comparable pricing, context, or release timing.

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Olmo 3 32B Think

Olmo 3 32B Think is a large-scale, 32-billion-parameter model purpose-built for deep reasoning, complex logic chains and advanced instruction-following scenarios. Its capacity enables strong performance on demanding evaluation tasks and...

GPT-5.1

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...