Upstage
Solar Pro 4
Upstage's flagship model, specialized for agentic use
Model facts
- Context window
- 524K tokens
- Maximum output
- 131K tokens
- Cheapest paid input
- $0.03 per 1M tokens
- Cheapest paid output
- $0.12 per 1M tokens
- Open weights
- no
- Providers
- 6
Capabilities and modalities
reasoning, tool calling, structured output, temperature control, text.
Artificial Analysis benchmarks
Compare this model on the full LLM benchmark leaderboard.
| Configuration | AAI | Coding | Math | Output tokens/s |
|---|---|---|---|---|
| default | 41.6 | 52.7 | not measured | 53.6 |
Observed price history
- 2026-08-24: $0.03 input / $0.12 output per 1M tokens
API providers
- LLMTR — model id upstage/solar-pro4; $0.03 input / $0.12 output per 1M tokens; provider documentation
- NanoGPT — model id upstage/solar-pro4; $0.03 input / $0.12 output per 1M tokens; provider documentation
- OpenRouter — model id upstage/solar-pro4; $0.03 input / $0.12 output per 1M tokens; provider documentation
- Kilo Gateway (Upstage) — model id upstage/solar-pro4; $0.3 input / $1.2 output per 1M tokens; provider documentation
- Upstage — model id solar-pro4; $0.3 input / $1.2 output per 1M tokens; provider documentation
- Arena — model id solar-pro4; not published input / not published output per 1M tokens; provider documentation