Seminal AI
§1

Phi-3-mini-128k-instruct

The model that launched the SLM category; still one of the most downloaded Phi checkpoints for offline/edge use, but on Azure Phi-4-mini-instruct is cheaper and stronger.

Data checked 2026-09-06

Microsoft deprecated open weights Phi-3-mini-128k-instruct

Context window
131.1K tokens in
Max output
4.1K tokens out
Input
$0.13 per 1M tokens
Output
$0.52 per 1M tokens
Blended
$0.23 3:1 in:out
Knowledge cutoff
2023-10
Released
2024-04-22
Parameters
3.8B
Licence
MIT

A What it is for

At a three-to-one input-to-output ratio, Phi-3-mini-128k-instruct costs $0.23 per million tokens blended. A workload of one million input and 330,000 output tokens per day would run about $9.05 per month at list price, before caching or batch discounts.

B Capabilities

streaming fine-tuning
Input modalitiestext
Output modalitiestext

C Others from Microsoft

Model Context Max out In $/M Out $/M Blended Status
MAI-Thinking-1 MAI-Thinking-1 256K 64K $2.00 $8.00 $3.50 preview
MAI-Cyber-1-Flash MAI-Cyber-1-Flash — — $0.60 $3.50 $1.32 preview
MAI-Image-2.6 MAI-Image-2.6 32K — — — — preview
MAI-Image-2.6-Flash MAI-Image-2.6-Flash 32K — — — — preview
MAI-Image-2.5-Pro MAI-Image-2.5-Pro 32K — $5.00 $106.00 $30.25 preview
MAI-Image-2.5 MAI-Image-2.5 32K — $5.00 $47.00 $15.50 preview
MAI-Image-2.5-Flash MAI-Image-2.5-Flash 32K — $1.75 $19.50 $6.19 preview
MAI-Voice-2 MAI-Voice-2 — — — — — preview
MAI-Voice-2-Flash MAI-Voice-2-Flash — — — — — preview
MAI-Voice-1 MAI-Voice-1 — — — — — deprecated
MAI-Transcribe-2 MAI-Transcribe-2 — — — — — preview
MAI-Transcribe-1.5 MAI-Transcribe-1.5 — — — — — preview

D Verify before you commit

Model pricing changes without notice and this page is a snapshot. Confirm against the vendor's own page before you build a budget on it.

Source: prices.azure.com · checked 2026-09-06 · Microsoft pricing · API docs