Creator unverified · current

Solar Pro 4

Solar Pro 4 is listed with its creator unverified. It accepts text input and produces text output. Reported capabilities include reasoning, tool calling, and structured output.

Compare model

Report an error Model and price history

Modalities

Hosted provider token rates

$0.03 / $0.12

USD per 1M input / output tokens · NanoGPT

Context

524K

Released

2026-08-06

Knowledge cutoff

Feb 2026

No recent lab-operated provider rate is available. Showing the third-party host with the lowest input rate + ¼ output rate. This is one offering, not an average; other providers, modalities, tiers, and fees may differ.

Where to use it

7 observed offerings · token prices in USD per million where available

Estimate your workload cost

AI/ML API

upstage/solar-pro4

current

Input

$0.0317

Output

$0.127

Cache

$0.006348

Context

524K

Max output

131K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

LLMTR

upstage/solar-pro4

current

Input

$0.15

Output

$0.60

Cache

$0.03

Context

524K

Max output

131K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

NanoGPT

upstage/solar-pro4

current

Input

$0.03

Output

$0.12

Cache

$0.006

Context

524K

Max output

131K

Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

OpenRouter

upstage/solar-pro4

current

Input

$0.15

Output

$0.60

Cache

$0.03

Context

524K

Max output

131K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

Upstage

solar-pro4

current

Input

$0.30

Output

$1.20

Cache

$0.06

Context

524K

Max output

131K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

Kilo Gateway

upstage/solar-pro4

current

Input

$0.30

Output

$1.20

Cache

$0.06

Context

524K

Max output

131K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

NanoGPT

upstage/solar-pro4:thinking

current

Input

$0.03

Output

$0.12

Cache

$0.006

Context

524K

Max output

131K

Reasoning: Yes
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

Limits and capabilities reflect each provider’s listed offering. Unknown means support was not reported.

Provider / API ID	Status	Context	Max output	Input	Output	Cache read	Reasoning	Tools	Structured	Temperature
AI/ML API upstage/solar-pro4	currentRecent price	524K	131K	$0.0317	$0.127	$0.006348	Yes	Yes	Yes	Yes
LLMTR upstage/solar-pro4	currentRecent price	524K	131K	$0.15	$0.60	$0.03	Yes	Yes	Yes	Yes
NanoGPT upstage/solar-pro4	currentRecent price	524K	131K	$0.03	$0.12	$0.006	No	Yes	Yes	Yes
OpenRouter upstage/solar-pro4	currentRecent price	524K	131K	$0.15	$0.60	$0.03	Yes	Yes	Yes	Yes
Upstage solar-pro4	currentRecent price	524K	131K	$0.30	$1.20	$0.06	Yes	Yes	Yes	Yes
Kilo Gateway upstage/solar-pro4	currentRecent price	524K	131K	$0.30	$1.20	$0.06	Yes	Yes	Yes	Yes
NanoGPT upstage/solar-pro4:thinking	currentRecent price	524K	131K	$0.03	$0.12	$0.006	Yes	Yes	Yes	Yes

Capabilities and limits

Input: text
Output: text
Max output: 131K
Weights: Closed (source-reported)
Release: 2026-08-06
Knowledge cutoff: Feb 2026
Family: solar-pro

Reasoning · Tool calling · Structured output

Provider-specific limits and support can differ.

Plan a model evaluation

Evaluate quality and latency on examples from your intended use before choosing a model.

Explore available evidence

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Model and price history

Latest recorded change: price change · 2026-10-23

Model changes (7)

price change · 2026-10-23

{
  "before": {
    "input": "0.04126200",
    "output": "0.16504800",
    "provider": "AI/ML API"
  },
  "after": {
    "input": 0.03174,
    "output": 0.12696,
    "provider": "AI/ML API"
  }
}

price change · 2026-10-22

{
  "before": {
    "input": "0.03000000",
    "output": "0.12000000",
    "provider": "LLMTR"
  },
  "after": {
    "input": 0.15,
    "output": 0.6,
    "provider": "LLMTR"
  }
}

price change · 2026-10-20

{
  "before": {
    "input": "0.09000000",
    "output": "0.36000000",
    "provider": "OpenRouter"
  },
  "after": {
    "input": 0.15,
    "output": 0.6,
    "provider": "OpenRouter"
  }
}

source refresh · 2026-10-12

{
  "before": {
    "knowledge_cutoff_reported": null
  },
  "after": {
    "knowledge_cutoff_reported": "2026-02"
  }
}

source refresh · 2026-10-12

{
  "before": {
    "knowledge_cutoff_reported": null
  },
  "after": {
    "knowledge_cutoff_reported": "2026-02"
  }
}

source refresh · 2026-10-12

{
  "before": {
    "knowledge_cutoff_reported": null
  },
  "after": {
    "knowledge_cutoff_reported": "2026-02"
  }
}

source refresh · 2026-10-12

{
  "before": {
    "knowledge_cutoff_reported": null
  },
  "after": {
    "knowledge_cutoff_reported": "2026-02"
  }
}

Price history (232 observations)

Date	Provider	Input / output
2026-11-02	AI/ML API	$0.0317 / $0.127
2026-11-02	Kilo Gateway	$0.30 / $1.20
2026-11-02	LLMTR	$0.15 / $0.60
2026-11-02	NanoGPT	$0.03 / $0.12
2026-11-02	NanoGPT	$0.03 / $0.12
2026-11-02	OpenRouter	$0.15 / $0.60
2026-11-02	Upstage	$0.30 / $1.20
2026-11-01	AI/ML API	$0.0317 / $0.127
2026-11-01	Kilo Gateway	$0.30 / $1.20
2026-11-01	LLMTR	$0.15 / $0.60
2026-11-01	NanoGPT	$0.03 / $0.12
2026-11-01	NanoGPT	$0.03 / $0.12
2026-11-01	OpenRouter	$0.15 / $0.60
2026-11-01	Upstage	$0.30 / $1.20
2026-10-31	AI/ML API	$0.0317 / $0.127
2026-10-31	Kilo Gateway	$0.30 / $1.20
2026-10-31	LLMTR	$0.15 / $0.60
2026-10-31	NanoGPT	$0.03 / $0.12
2026-10-31	NanoGPT	$0.03 / $0.12
2026-10-31	OpenRouter	$0.15 / $0.60
2026-10-31	Upstage	$0.30 / $1.20
2026-10-30	AI/ML API	$0.0317 / $0.127
2026-10-30	Kilo Gateway	$0.30 / $1.20
2026-10-30	LLMTR	$0.15 / $0.60
2026-10-30	NanoGPT	$0.03 / $0.12
2026-10-30	NanoGPT	$0.03 / $0.12
2026-10-30	OpenRouter	$0.15 / $0.60
2026-10-30	Upstage	$0.30 / $1.20
2026-10-29	AI/ML API	$0.0317 / $0.127
2026-10-29	Kilo Gateway	$0.30 / $1.20
2026-10-29	LLMTR	$0.15 / $0.60
2026-10-29	NanoGPT	$0.03 / $0.12
2026-10-29	NanoGPT	$0.03 / $0.12
2026-10-29	OpenRouter	$0.15 / $0.60
2026-10-29	Upstage	$0.30 / $1.20
2026-10-28	AI/ML API	$0.0317 / $0.127
2026-10-28	Kilo Gateway	$0.30 / $1.20
2026-10-28	LLMTR	$0.15 / $0.60
2026-10-28	NanoGPT	$0.03 / $0.12
2026-10-28	NanoGPT	$0.03 / $0.12
2026-10-28	OpenRouter	$0.15 / $0.60
2026-10-28	Upstage	$0.30 / $1.20
2026-10-27	AI/ML API	$0.0317 / $0.127
2026-10-27	Kilo Gateway	$0.30 / $1.20
2026-10-27	LLMTR	$0.15 / $0.60
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	OpenRouter	$0.15 / $0.60
2026-10-27	Upstage	$0.30 / $1.20
2026-10-27	AI/ML API	$0.0317 / $0.127
2026-10-27	Kilo Gateway	$0.30 / $1.20
2026-10-27	LLMTR	$0.15 / $0.60
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	OpenRouter	$0.15 / $0.60
2026-10-27	Upstage	$0.30 / $1.20
2026-10-27	AI/ML API	$0.0317 / $0.127
2026-10-27	Kilo Gateway	$0.30 / $1.20
2026-10-27	LLMTR	$0.15 / $0.60
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	OpenRouter	$0.15 / $0.60
2026-10-27	Upstage	$0.30 / $1.20
2026-10-27	AI/ML API	$0.0317 / $0.127
2026-10-27	Kilo Gateway	$0.30 / $1.20
2026-10-27	LLMTR	$0.15 / $0.60
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	NanoGPT	$0.03 / $0.12
2026-10-27	OpenRouter	$0.15 / $0.60
2026-10-27	Upstage	$0.30 / $1.20
2026-10-26	AI/ML API	$0.0317 / $0.127
2026-10-26	Kilo Gateway	$0.30 / $1.20
2026-10-26	LLMTR	$0.15 / $0.60
2026-10-26	NanoGPT	$0.03 / $0.12
2026-10-26	NanoGPT	$0.03 / $0.12
2026-10-26	OpenRouter	$0.15 / $0.60
2026-10-26	Upstage	$0.30 / $1.20
2026-10-25	AI/ML API	$0.0317 / $0.127
2026-10-25	Kilo Gateway	$0.30 / $1.20
2026-10-25	LLMTR	$0.15 / $0.60
2026-10-25	NanoGPT	$0.03 / $0.12
2026-10-25	NanoGPT	$0.03 / $0.12
2026-10-25	OpenRouter	$0.15 / $0.60
2026-10-25	Upstage	$0.30 / $1.20
2026-10-24	AI/ML API	$0.0317 / $0.127
2026-10-24	Kilo Gateway	$0.30 / $1.20
2026-10-24	LLMTR	$0.15 / $0.60
2026-10-24	NanoGPT	$0.03 / $0.12
2026-10-24	NanoGPT	$0.03 / $0.12
2026-10-24	OpenRouter	$0.15 / $0.60
2026-10-24	Upstage	$0.30 / $1.20
2026-10-24	AI/ML API	$0.0317 / $0.127
2026-10-24	Kilo Gateway	$0.30 / $1.20
2026-10-24	LLMTR	$0.15 / $0.60
2026-10-24	NanoGPT	$0.03 / $0.12
2026-10-24	NanoGPT	$0.03 / $0.12
2026-10-24	OpenRouter	$0.15 / $0.60
2026-10-24	Upstage	$0.30 / $1.20
2026-10-24	AI/ML API	$0.0317 / $0.127
2026-10-24	Kilo Gateway	$0.30 / $1.20
2026-10-24	LLMTR	$0.15 / $0.60
2026-10-24	NanoGPT	$0.03 / $0.12
2026-10-24	NanoGPT	$0.03 / $0.12
2026-10-24	OpenRouter	$0.15 / $0.60
2026-10-24	Upstage	$0.30 / $1.20
2026-10-23	AI/ML API	$0.0317 / $0.127
2026-10-23	Kilo Gateway	$0.30 / $1.20
2026-10-23	LLMTR	$0.15 / $0.60
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	OpenRouter	$0.15 / $0.60
2026-10-23	Upstage	$0.30 / $1.20
2026-10-23	AI/ML API	$0.0317 / $0.127
2026-10-23	Kilo Gateway	$0.30 / $1.20
2026-10-23	LLMTR	$0.15 / $0.60
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	OpenRouter	$0.15 / $0.60
2026-10-23	Upstage	$0.30 / $1.20
2026-10-23	AI/ML API	$0.0317 / $0.127
2026-10-23	Kilo Gateway	$0.30 / $1.20
2026-10-23	LLMTR	$0.15 / $0.60
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	OpenRouter	$0.15 / $0.60
2026-10-23	Upstage	$0.30 / $1.20
2026-10-23	AI/ML API	$0.0317 / $0.127
2026-10-23	Kilo Gateway	$0.30 / $1.20
2026-10-23	LLMTR	$0.15 / $0.60
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	OpenRouter	$0.15 / $0.60
2026-10-23	Upstage	$0.30 / $1.20
2026-10-23	AI/ML API	$0.0317 / $0.127
2026-10-23	Kilo Gateway	$0.30 / $1.20
2026-10-23	LLMTR	$0.15 / $0.60
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	NanoGPT	$0.03 / $0.12
2026-10-23	OpenRouter	$0.15 / $0.60
2026-10-23	Upstage	$0.30 / $1.20
2026-10-22	AI/ML API	$0.0413 / $0.165
2026-10-22	Kilo Gateway	$0.30 / $1.20
2026-10-22	LLMTR	$0.15 / $0.60
2026-10-22	NanoGPT	$0.03 / $0.12
2026-10-22	NanoGPT	$0.03 / $0.12
2026-10-22	OpenRouter	$0.15 / $0.60
2026-10-22	Upstage	$0.30 / $1.20
2026-10-21	AI/ML API	$0.0413 / $0.165
2026-10-21	Kilo Gateway	$0.30 / $1.20
2026-10-21	LLMTR	$0.03 / $0.12
2026-10-21	NanoGPT	$0.03 / $0.12
2026-10-21	NanoGPT	$0.03 / $0.12
2026-10-21	OpenRouter	$0.15 / $0.60
2026-10-21	Upstage	$0.30 / $1.20
2026-10-20	AI/ML API	$0.0413 / $0.165
2026-10-20	Kilo Gateway	$0.30 / $1.20
2026-10-20	LLMTR	$0.03 / $0.12
2026-10-20	NanoGPT	$0.03 / $0.12
2026-10-20	NanoGPT	$0.03 / $0.12
2026-10-20	OpenRouter	$0.15 / $0.60
2026-10-20	Upstage	$0.30 / $1.20
2026-10-19	AI/ML API	$0.0413 / $0.165
2026-10-19	LLMTR	$0.03 / $0.12
2026-10-19	NanoGPT	$0.03 / $0.12
2026-10-19	NanoGPT	$0.03 / $0.12
2026-10-19	Upstage	$0.30 / $1.20
2026-10-18	AI/ML API	$0.0413 / $0.165
2026-10-18	LLMTR	$0.03 / $0.12
2026-10-18	NanoGPT	$0.03 / $0.12
2026-10-18	NanoGPT	$0.03 / $0.12
2026-10-18	Upstage	$0.30 / $1.20
2026-10-17	AI/ML API	$0.0413 / $0.165
2026-10-17	LLMTR	$0.03 / $0.12
2026-10-17	NanoGPT	$0.03 / $0.12
2026-10-17	NanoGPT	$0.03 / $0.12
2026-10-17	Upstage	$0.30 / $1.20
2026-10-12	LLMTR	$0.03 / $0.12
2026-10-12	NanoGPT	$0.03 / $0.12
2026-10-12	NanoGPT	$0.03 / $0.12
2026-10-12	Upstage	$0.30 / $1.20
2026-10-12	LLMTR	$0.03 / $0.12
2026-10-12	NanoGPT	$0.03 / $0.12
2026-10-12	NanoGPT	$0.03 / $0.12
2026-10-12	Upstage	$0.30 / $1.20
2026-10-11	LLMTR	$0.03 / $0.12
2026-10-11	NanoGPT	$0.03 / $0.12
2026-10-11	NanoGPT	$0.03 / $0.12
2026-10-11	Upstage	$0.30 / $1.20
2026-10-10	LLMTR	$0.03 / $0.12
2026-10-10	NanoGPT	$0.03 / $0.12
2026-10-10	NanoGPT	$0.03 / $0.12
2026-10-10	Upstage	$0.30 / $1.20
2026-10-09	LLMTR	$0.03 / $0.12
2026-10-09	NanoGPT	$0.03 / $0.12
2026-10-09	NanoGPT	$0.03 / $0.12
2026-10-09	Upstage	$0.30 / $1.20
2026-10-09	LLMTR	$0.03 / $0.12
2026-10-09	NanoGPT	$0.03 / $0.12
2026-10-09	NanoGPT	$0.03 / $0.12
2026-10-09	Upstage	$0.30 / $1.20
2026-10-08	LLMTR	$0.03 / $0.12
2026-10-08	NanoGPT	$0.03 / $0.12
2026-10-08	NanoGPT	$0.03 / $0.12
2026-10-08	Upstage	$0.30 / $1.20
2026-10-07	LLMTR	$0.03 / $0.12
2026-10-07	NanoGPT	$0.03 / $0.12
2026-10-07	NanoGPT	$0.03 / $0.12
2026-10-07	Upstage	$0.30 / $1.20
2026-09-22	LLMTR	$0.03 / $0.12
2026-09-22	NanoGPT	$0.03 / $0.12
2026-09-22	NanoGPT	$0.03 / $0.12
2026-09-22	Upstage	$0.30 / $1.20
2026-09-21	LLMTR	$0.03 / $0.12
2026-09-21	NanoGPT	$0.03 / $0.12
2026-09-21	NanoGPT	$0.03 / $0.12
2026-09-21	Upstage	$0.30 / $1.20
2026-09-20	LLMTR	$0.03 / $0.12
2026-09-20	NanoGPT	$0.03 / $0.12
2026-09-20	NanoGPT	$0.03 / $0.12
2026-09-20	Upstage	$0.30 / $1.20
2026-09-19	LLMTR	$0.03 / $0.12
2026-09-19	NanoGPT	$0.03 / $0.12
2026-09-19	NanoGPT	$0.03 / $0.12
2026-09-19	Upstage	$0.30 / $1.20
2026-09-18	LLMTR	$0.03 / $0.12
2026-09-18	NanoGPT	$0.03 / $0.12
2026-09-18	NanoGPT	$0.03 / $0.12
2026-09-18	Upstage	$0.30 / $1.20
2026-09-17	LLMTR	$0.03 / $0.12
2026-09-17	NanoGPT	$0.03 / $0.12
2026-09-17	NanoGPT	$0.03 / $0.12
2026-09-17	Upstage	$0.30 / $1.20