API cost decision in 10 seconds

Gemma 4 31B vs Qwen2.5 7B Instruct

Pick Qwen2.5 7B Instruct for lower cost; pick Gemma 4 31B 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 Qwen2.5 7B Instruct for lower cost; pick Gemma 4 31B only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Qwen2.5 7B Instruct is estimated at $0.09 vs $0.3 for Gemma 4 31B, saving $0.21 (70.5% lower).

Cost-first pickQwen2.5 7B Instruct
Context-first pickGemma 4 31B
Sample savings$0.2170.5%
10x traffic gap$2.15

Gemma 4 31B has more context, but Qwen2.5 7B Instruct saves $0.21 on the standard workload. At 10x that traffic, the same price gap is about $2.15. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Qwen2.5 7B Instruct stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGemma 4 31BQwen2.5 7B Instruct
Input-heavy / RAG5M input + 500K outputQwen2.5 7B Instruct$0.78$0.25
Balanced workload1M input + 1M outputQwen2.5 7B Instruct$0.49$0.14
Output-heavy chatbot1M input + 5M outputQwen2.5 7B Instruct$1.97$0.54
Cheaper input Qwen2.5 7B Instruct $0.12 vs $0.04 / 1M

Qwen2.5 7B Instruct is $0.08 cheaper per 1M input tokens (66.7% lower; 3x difference).

Cheaper output Qwen2.5 7B Instruct $0.37 vs $0.1 / 1M

Qwen2.5 7B Instruct is $0.27 cheaper per 1M output tokens (73% lower; 3.7x difference).

Larger context Gemma 4 31B 262.14K vs 131.07K

Gemma 4 31B has 131.07K more context (2x larger).

Sample workload Qwen2.5 7B Instruct $0.3 vs $0.09

Qwen2.5 7B Instruct is $0.21 cheaper on the standard workload (70.5% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Gemma 4 31B Calculating… Estimated API cost
Qwen2.5 7B Instruct 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

Qwen2.5 7B Instruct has the lower input price; Qwen2.5 7B Instruct has the lower output price; Gemma 4 31B offers the larger context window. For the 1M input plus 500K output sample, Qwen2.5 7B Instruct is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.3 for Gemma 4 31B and $0.09 for Qwen2.5 7B Instruct.

Best Fit

Choose Gemma 4 31B when you care most about larger context window.

Choose Qwen2.5 7B Instruct 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, Qwen2.5 7B Instruct is estimated at $0.09 vs $0.3 for Gemma 4 31B, saving $0.21 (70.5% lower).
  • Qwen2.5 7B Instruct is $0.21 cheaper on the standard workload (70.5% lower).
  • Qwen2.5 7B Instruct is $0.08 cheaper per 1M input tokens (66.7% lower; 3x difference).
  • Qwen2.5 7B Instruct is $0.27 cheaper per 1M output tokens (73% lower; 3.7x difference).
  • Gemma 4 31B has 131.07K more context (2x larger).
Head-to-Head Specs
FeatureGemma 4 31B
(Google)
Qwen2.5 7B Instruct
(Qwen)
Input Price
prompt tokens per 1M
$0.12$0.04
Completion Price
per 1M tokens
$0.37$0.1
Sample Workload Cost
1M input + 500K output
$0.3$0.09
Context Window262.14K131.07K
Release Date
Popularity#27#134

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionQwen2.5 7B InstructOn the standard 1M input plus 500K output workload, Qwen2.5 7B Instruct is estimated at $0.09 vs $0.3 for Gemma 4 31B, saving $0.21 (70.5% lower).
High-volume input processingQwen2.5 7B InstructLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsQwen2.5 7B InstructLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGemma 4 31BA larger context window leaves more room for retrieved passages, conversation history, or source files.

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Provider catalogs

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Google catalog

Review all tracked Google models before deciding whether this matchup is the right shortlist.

Open Google models

Qwen catalog

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

Open Qwen models
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...

Qwen2.5 7B Instruct

Qwen2.5 7B is the latest series of Qwen large language models. Qwen2.5 brings the following improvements upon Qwen2: - Significantly more knowledge and has greatly improved capabilities in coding and...