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Solar Pro 4
upstage·upstage/solar-pro4·GA·Closed·solar-pro series·NEW
Upstage's flagship model, specialized for agentic use
At a glance
Official price$0.30 / $1.20 per 1M
Cache read $0.06 · Upstage
Lowest paid$0.03 / $0.12
NanoGPT Gateway · 10× spread
Context524,288
Output limit131,072
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ TemperatureAttachments
⚠ Providers report capability flags inconsistently
Modalities
Text
Knowledge cutoff2026-02
Released / updated2026-08-06 / 2026-08-06
Quality & performanceArtificial Analysis · Intelligence Index v4.1
Intelligence41.6
Value792
Coding52.7
Agentic33.6
Output speed47 tok/s
TTFT2.53 s
Cost per task$0.2231
Value formulaIQ 41.6 ÷ min blended $0.052 = 792
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
Available at 4 providers4 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NanoGPT | Gateway | $0.03 | $0.12 | $0.006 | — | 524,288 | 131,072 | |
| OpenRouter | Gateway | $0.03 | $0.12 | $0.006 | — | 524,288 | 131,072 | |
| LLMTR | Gateway | $0.03 | $0.12 | — | — | 524,288 | 131,072 | |
| UpstageOfficial | Gateway | $0.30 | $1.20 | $0.06 | — | 524,288 | 131,072 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1NanoGPT$9.12
2OpenRouter$9.12
3LLMTR$12.00
4Upstage · Official$91.20
Switch to NanoGPT to save $82.08/mo (90%)
Note: this is a gateway; verify availability and rate limits yourself.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = noneeffort = minimaleffort = loweffort = mediumeffort = higheffort = xhigheffort = max
1 / 4 providers expose no reasoning control (reasoning_options: []).
Related models
Solar Pro 4 Thinkingsame series$0.03 / $0.12Upstage: Solar Pro 3same series$0.15 / $0.60Solar Pro 3same series$0.25 / $0.25DeepSeek V4 Flashcheaper alternative$0.14 / $0.28GPT-5 Nanocheaper alternative$0.05 / $0.40MiMo-V2.5cheaper alternative$0.14 / $0.28Gemini 2.5 Flash-Litecheaper alternative$0.10 / $0.40
Price historyone sample accumulated per data sync
Input listOutput listMin blended