Upstage's flagship model, specialized for agentic use
- Context
- 524K
- Released
- 2mo ago
- Input / 1M tokens
- $0.09
- Output / 1M tokens
- $0.36
- Cached input / 1M tokens
- $0.02
Sources:models.devOpenRouter
Benchmarks
DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.
Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.
No benchmark results have been matched to this model yet.
Specifications
- Developer
- Upstage
- Model family
- Solar
- Type
- Language model
- Predecessor
- —
- Successor
- —
- Released
- August 6, 2026
- Model ID
upstage/solar-pro4- Openness
- Closed
- License
- —
- Input modalities
- text
- Output modalities
- text
- Modality
- text->text
- Tokenizer
- Other
- Max output tokens
- 131K
- Knowledge cutoff
- 2026-02
- Hugging Face
- —
- Source freshness
- Metadata synced Oct 8, 2026, 10:17 PM UTC
Additional source evidence
- Source model
- upstage/solar-pro4
- Source family
- solar-pro
- Last updated
- 2026-08-06
- Knowledge cutoff
- 2026-02
- Model context
- 524K
- Model output limit
- 131K
- Open weights
- No
- File attachments
- No
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- Temperature control
- Yes
Complete source record (JSON)
{
"id": "upstage/solar-pro4",
"name": "Solar Pro 4",
"description": "Upstage's flagship model, specialized for agentic use",
"family": "solar-pro",
"last_updated": "2026-08-06",
"knowledge": "2026-02",
"attachment": false,
"reasoning": true,
"tool_call": true,
"structured_output": true,
"temperature": true,
"modalities": {
"input": [
"text"
],
"output": [
"text"
]
},
"limit": {
"context": 524288,
"output": 131072
},
"release_date": "2026-08-06",
"open_weights": false
}Infrastructure
Provider availability
| Provider | Endpoint | Context | Input /M tokens | Output /M tokens | Cached input /M tokens | Cache write /M tokens | Uptime 1d | Data handling |
|---|---|---|---|---|---|---|---|---|
| upstage/zdr | 524K | $0.09 | $0.36 | $0.02 | — | 100.00% | ZDR: YesTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 | |
| upstage | 524K | $0.09 | $0.36 | $0.02 | — | 100.00% | ZDR: NoTraining: Unknown Prompt logging: Unknown Retention: Unknown Checked 2026-10-15 |
Provider data:OpenRouter