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Phi-3.5-mini Instruct vs Phi 3 mini 4k instruct: the real cost to run each

The honest, $0-markup cost to run Phi-3.5-mini Instruct (Microsoft, 3.8B) and Phi 3 mini 4k instruct (microsoft, 3.8B), side by side — free on your own machine, on your own rented GPU at the vendor's price, or via your own API key.

Phi-3.5-mini Instruct vs Phi 3 mini 4k instruct — cost comparison

Phi-3.5-mini InstructPhi 3 mini 4k instruct
Parameters3.8B3.8B
Context window✓ 131.1K4.1K
LicenseCommercial OKCommercial OK
VRAM to run~5.0 GB (Q4_K_M)~5.0 GB (Q4_K_M)
Rent a GPU$0.06/hr$0.06/hr
Your API key$0.13/1M (est.)$0.13/1M (est.)

Which should you pick?

VRAM, size, context and license are facts from the catalog and the shared cost engine; API prices are real where we have them (labeled "est." otherwise). We don't rank model quality or quote benchmarks here.

Full cost breakdown: Phi-3.5-mini Instruct →
Full cost breakdown: Phi 3 mini 4k instruct →

Open the free Spanvero advisor → to compare them live for your exact workload and hardware.

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Spanvero · All comparisons · Prices as of 2026-07-06. $0 markup, your own accounts, we never resell compute. © 2026 Cynosure LLC.

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