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Phi-3-small-128k-instruct

Legacy 7B long-context model; superseded on every axis by Phi-4-mini-instruct at half the price.

Open weights · Permissive (Apache, MIT, OpenMDW) · Data checked September 6, 2026 · Not a hands-on evaluation

Model ID Phi-3-small-128k-instruct

Parameters
7B
Architecture
Not recorded
Context window
131,072 tokensMaximum input
Max output
4,096 tokensPer response
Input price
$0.15 per 1M tokens
Output price
$0.60 per 1M tokens
Cached input
Not published
Blended price
$0.2625 per 1M tokens3:1 input to output
Knowledge cutoff
2023-10
Released
2024-05-07
Status
deprecated
Size band
4B to 15B

License and openness

Phi-3-small-128k-instruct is released under the MIT. This is a permissive license. It generally allows use, modification and redistribution, including commercial use, subject to attribution and notice requirements. License terms can change between versions; confirm the text published with the weights you download.

Capabilities

Input modalitiestext
Output modalitiestext

What it is for

At a three-to-one input-to-output ratio, Phi-3-small-128k-instruct costs $0.26 per million tokens blended. A workload of one million input and 330,000 output tokens per day would run about $10.44 per month at list price, before caching or batch discounts.

Cost at list price

Input$0.15 per 1M tokens
Output$0.60 per 1M tokens
Cached inputNot published
Blended, 3:1$0.2625 per 1M tokens
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Sources

Sources checked September 6, 2026. Specifications and prices change without notice; confirm against the provider before you commit.

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