API cost decision in 10 seconds

NewGranite 4.1 8B vs Qwen3.5-Flash

Pick Granite 4.1 8B for lower cost; pick Qwen3.5-Flash 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 Granite 4.1 8B for lower cost; pick Qwen3.5-Flash only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Granite 4.1 8B is estimated at $0.1 vs $0.2 for Qwen3.5-Flash, saving $0.1 (48.7% lower).

Cost-first pickGranite 4.1 8B
Context-first pickQwen3.5-Flash
Sample savings$0.148.7%
10x traffic gap$0.95

Qwen3.5-Flash has more context, but Granite 4.1 8B saves $0.1 on the standard workload. At 10x that traffic, the same price gap is about $0.95. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Granite 4.1 8B stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGranite 4.1 8BQwen3.5-Flash
Input-heavy / RAG5M input + 500K outputGranite 4.1 8B$0.3$0.46
Balanced workload1M input + 1M outputGranite 4.1 8B$0.15$0.33
Output-heavy chatbot1M input + 5M outputGranite 4.1 8B$0.55$1.36
Cheaper input Granite 4.1 8B $0.05 vs $0.065 / 1M

Granite 4.1 8B is $0.01 cheaper per 1M input tokens (23.1% lower; 1.3x difference).

Cheaper output Granite 4.1 8B $0.1 vs $0.26 / 1M

Granite 4.1 8B is $0.16 cheaper per 1M output tokens (61.5% lower; 2.6x difference).

Larger context Qwen3.5-Flash 131.07K vs 1M

Qwen3.5-Flash has 868.93K more context (7.63x larger).

Sample workload Granite 4.1 8B $0.1 vs $0.2

Granite 4.1 8B is $0.1 cheaper on the standard workload (48.7% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Granite 4.1 8B Calculating… Estimated API cost
Qwen3.5-Flash 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

Granite 4.1 8B has the lower input price; Granite 4.1 8B has the lower output price; Qwen3.5-Flash offers the larger context window. For the 1M input plus 500K output sample, Granite 4.1 8B is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.1 for Granite 4.1 8B and $0.2 for Qwen3.5-Flash.

Best Fit

Choose Granite 4.1 8B when you care most about lower input-token price, and lower output-token price.

Choose Qwen3.5-Flash when you care most about larger context window.

Decision Notes
  • On the standard 1M input plus 500K output workload, Granite 4.1 8B is estimated at $0.1 vs $0.2 for Qwen3.5-Flash, saving $0.1 (48.7% lower).
  • Granite 4.1 8B is $0.1 cheaper on the standard workload (48.7% lower).
  • Granite 4.1 8B is $0.01 cheaper per 1M input tokens (23.1% lower; 1.3x difference).
  • Granite 4.1 8B is $0.16 cheaper per 1M output tokens (61.5% lower; 2.6x difference).
  • Qwen3.5-Flash has 868.93K more context (7.63x larger).
Head-to-Head Specs
FeatureNewGranite 4.1 8B
(IBM)
Qwen3.5-Flash
(Qwen)
Input Price
prompt tokens per 1M
$0.05$0.065
Completion Price
per 1M tokens
$0.1$0.26
Sample Workload Cost
1M input + 500K output
$0.1$0.2
Context Window131.07K1M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGranite 4.1 8BOn the standard 1M input plus 500K output workload, Granite 4.1 8B is estimated at $0.1 vs $0.2 for Qwen3.5-Flash, saving $0.1 (48.7% lower).
High-volume input processingGranite 4.1 8BLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGranite 4.1 8BLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workQwen3.5-FlashA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

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Provider catalogs

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IBM catalog

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Qwen catalog

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Granite 4.1 8B

Granite 4.1 8B is a dense, decoder-only 8-billion-parameter language model from IBM, part of the Granite 4.1 family. It supports a 131K-token context window and is designed for enterprise tasks...

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