Upstage
Solar Pro 4 Thinking
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
- 1
Capabilities and modalities
reasoning, tool calling, structured output, temperature control, text.
Observed price history
- 2026-08-24: $0.03 input / $0.12 output per 1M tokens
API providers
- NanoGPT — model id upstage/solar-pro4:thinking; $0.03 input / $0.12 output per 1M tokens; provider documentation