Solar Pro 4
solar-pro4
Upstage's flagship model, specialized for agentic use
Specification
most-agreed values
Context
524K
Max output
131K
Released
2026-08-06
Knowledge cutoff
2026-02
Retires
—
Open weights
no
Input
text
Output
text
Price
US dollars per million tokens · most-agreed
Input
$0.03
Output
$0.12
Cache read
$0.006
Available from 7 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| nano-gpt · thinking | $0.03 | $0.12 | $0.006 | — | 524K | 131K | — |
| nano-gpt · upstage | $0.03 | $0.12 | $0.006 | — | 524K | 131K | — |
| aimlapi · upstage | $0.0317 | $0.127 | $0.0063 | — | 524K | 131K | — |
| llmtr · upstage | $0.15 | $0.60 | $0.03 | — | 524K | 131K | — |
| openrouter · upstage | $0.15 | $0.60 | $0.03 | — | 524K | 131K | — |
| kilo · upstage | $0.30 | $1.20 | $0.06 | — | 524K | 131K | — |
| upstage | $0.30 | $1.20 | $0.06 | — | 524K | 131K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-02 | openrouter · upstage | Cache read | $0.006 |
| 2026-09-11 | openrouter · upstage | Cache read | $0.018 |
| 2026-10-20 | openrouter · upstage | Cache read | $0.03 |
| 2026-09-02 | llmtr · upstage | Input | $0.03 |
| 2026-10-22 | llmtr · upstage | Input | $0.15 |
| 2026-09-02 | openrouter · upstage | Input | $0.03 |
| 2026-09-11 | openrouter · upstage | Input | $0.09 |
| 2026-10-20 | openrouter · upstage | Input | $0.15 |
| 2026-09-02 | llmtr · upstage | Output | $0.12 |
| 2026-10-22 | llmtr · upstage | Output | $0.60 |
| 2026-09-02 | openrouter · upstage | Output | $0.12 |
| 2026-09-11 | openrouter · upstage | Output | $0.36 |
| 2026-10-20 | openrouter · upstage | Output | $0.60 |
| 2026-10-13 | aimlapi · upstage | Cache read | $0.0083 |
| 2026-10-23 | aimlapi · upstage | Cache read | $0.0063 |
| 2026-10-13 | aimlapi · upstage | Input | $0.0413 |
| 2026-10-23 | aimlapi · upstage | Input | $0.0317 |
| 2026-10-13 | aimlapi · upstage | Output | $0.165 |
| 2026-10-23 | aimlapi · upstage | Output | $0.127 |