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Upstage: Solar Mini 4 pricing

Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window. Upstage: Solar Mini 4 from OpenRouter costs $0.050 per 1M input tokens and $0.200 per 1M output tokens. Cached input is $0.005 per 1M. Context window 524,288 tokens.

API id upstage/solar-mini4 · OpenRouter · source · updated 2026-09-25 · general-purpose

$0.050
Input / 1M tokens
$0.200
Output / 1M tokens
$0.005
Cached input / 1M
524K
Context window

Upstage: Solar Mini 4 specifications

Provider
OpenRouter
API id
upstage/solar-mini4
Model type
general-purpose
Context window
524K tokens
Max output
131K tokens
Currency
USD
Price source
Provider API
Last checked
2026-09-25

Tags

  • fast

What Upstage: Solar Mini 4 costs in practice

Estimated cost at common usage volumes
WorkloadInput tokensOutput tokensEstimated cost
Short chat turn1,000500$0.0002
Document summary50,0002,000$0.0029
1M tokens in, 200K out1,000,000200,000$0.09

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does Upstage: Solar Mini 4 cost per 1M tokens?
Upstage: Solar Mini 4 costs $0.050 per 1M input tokens and $0.200 per 1M output tokens on the standard tier. Cached input is $0.005 per 1M.
What is Upstage: Solar Mini 4's context window?
Upstage: Solar Mini 4 accepts up to 524,288 tokens in a single request, and can return up to 131,072 output tokens.
Is there a cheaper OpenRouter model than Upstage: Solar Mini 4?
Yes. Mistral: Mistral Nemo is $0.019 per 1M input tokens versus $0.050 for Upstage: Solar Mini 4, with a 131,072 token context window.
Where does this Upstage: Solar Mini 4 price come from?
From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Other OpenRouter models

See all OpenRouter pricing →