Solar Pro 3
Flagship model for demanding analysis, coding, and production agent workflows.
- Capability
- —No ECI score yet
- Input
- $0.25per 1M tokens
- Output
- $0.25per 1M tokens
- Context
- 131K8K max output
What it costs
- Input
- $0.25per million tokens
- Output
- $0.25per million tokens
- Blended (3:1)
- $0.25cheaper than 75% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $0.625 |
| Team assistant25M input + 5M output tokens | $7.50 |
| Production app250M input + 50M output tokens | $75.00 |
Official Upstage API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Solar Pro 3 yet.
The details
- Lab
- Upstage
- Released
- Jan 2026
- Knowledge cutoff
- Mar 2025
- Context window
- 131,072 tokens
- Max output
- 8,192 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- Adjustable effort low · medium · high
- Tool calling
- Yes
- Structured output
- No
- Weights
- Proprietary
- API model ID
solar-pro3on Upstage- Availability
- 2 API providerslisted on models.dev
More from Upstage
About Solar Pro 3
How much does Solar Pro 3 cost?
Solar Pro 3 costs $0.25 input / $0.25 output per million tokens (official Upstage API price). At a 3:1 input-to-output mix that is $0.25 per million tokens, cheaper than 75% of the 360 priced models we track.
What is the context window of Solar Pro 3?
Solar Pro 3 accepts up to 131,072 tokens per request and can write up to 8,192 tokens in one response.
How good is Solar Pro 3?
Epoch AI has not published a Capabilities Index score for Solar Pro 3 yet.
Is Solar Pro 3 open source?
No. Solar Pro 3 is proprietary; you use it through Upstage’s API or partner platforms.
What inputs does Solar Pro 3 support?
Solar Pro 3 accepts text and replies in text. It is a reasoning model with low, medium and high effort settings, supports tool calling.
When was Solar Pro 3 released?
Upstage released Solar Pro 3 on Jan 2026. Its training data runs to Mar 2025.
What are the best alternatives to Solar Pro 3?
The closest current models from other labs on capability, price and release date are Jamba Mini (AI21 Labs, $0.20 / $0.40), GLM-4.6V-Flash (Z.ai (Zhipu), $0.161 / $0.559), Ministral 3 14B (Mistral AI, $0.268 / $0.325) and Grok 4.1 Fast (xAI, $0.20 / $0.50).