ModelInfo
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Solar Mini 4

Cost-efficient compact Solar model for agentic use, with reasoning, tool calling and structured outputs.

Upstagesolar-mini42026-09-22Report incorrect data

Specs

Context
—
Max output
—
Input price
$0.1/ 1M tokens
Output price
$0.4/ 1M tokens
Released
2026-09-22

Context

Not published

Pricing · USD / 1M tokens

Input
$0.1
Output
$0.4
Cache read
$0.01
Cache write
—

Modalities

Input
Text
Output
Text

API

API types
chat

Reasoning

Reasoning
Yes
Levels
noneminimallowmediumhighxhighmax

Info

Status
Active
Released
2026-09-22
Knowledge cutoff
2026-02

Features

Confirmed
toolsstructured_outputstreaming
Source · official docsVerified 2026-10-11

How to call

1 provider

upstagemodel = solar-mini4reasoning = reasoning_effort

chat
POSThttps://api.upstage.ai/v1/chat/completions

JSON

Standard format
solar-mini4.json
{
  "id": "solar-mini4",
  "object": "model",
  "created": 1790035200,
  "owned_by": "upstage",
  "name": "Solar Mini 4",
  "api": {
    "types": [
      "chat"
    ]
  },
  "limits": {
    "context": null,
    "input": null,
    "output": null
  },
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": true,
    "efforts": [
      "none",
      "minimal",
      "low",
      "medium",
      "high",
      "xhigh",
      "max"
    ]
  },
  "pricing": {
    "currency": "USD",
    "unit": "1M_tokens",
    "input": 0.1,
    "output": 0.4,
    "cache_read": 0.01,
    "cache_write": null
  },
  "features": [
    "tools",
    "structured_output",
    "streaming"
  ],
  "info": {
    "status": "active",
    "release_date": "2026-09-22",
    "knowledge_cutoff": "2026-02",
    "description": "Cost-efficient compact Solar model for agentic use, with reasoning, tool calling and structured outputs.",
    "docs": "https://console.upstage.ai/docs/models/solar-mini-4",
    "verified_at": "2026-10-11"
  }
}

Official sources

5