Solar Pro 4
upstage/solar-pro4-20260810
Upstage Solar Pro 4 is a text-to-text model. It supports tool use and reasoning, with a context length of 524,288 tokens.
- tool use
- structured outputs
- reasoning
At a glance
Specifications
What the API gives you
- Context window
- 524K tokens
- Max output
- 131K tokens
- Input price
- $0.030 / 1M tokens
- Output price
- $0.12 / 1M tokens
- Cache read
- $0.006 / 1M tokens
- Modalities
- text → text
- Knowledge cutoff
- —
- Released
- Aug 6, 2026
Measured evidence
Public benchmark record
- Design Arena Coding
- 1163 Elo2026-08-18
- Design Arena Coding
- 1164 Elo2026-08-19
- Design Arena Coding
- 1179 Elo2026-08-27
- Design Arena Coding
- 1164 Elo2026-08-20
- Design Arena Coding
- 1174 Elo2026-08-21
- Design Arena Coding
- 1175 Elo2026-08-22
- Design Arena Coding
- 1174 Elo2026-08-23
- Design Arena Coding
- 1178 Elo2026-08-28
- Design Arena Coding
- 1178 Elo2026-08-24
- Design Arena Coding
- 1180 Elo2026-08-25
- Design Arena Coding
- 1179 Elo2026-08-26
- Design Arena Coding
- 1178 Elo2026-08-29
- Design Arena Coding
- 1178 Elo2026-08-30
- Design Arena Coding
- 1177 Elo2026-08-31
- Design Arena Coding
- 1177 Elo2026-09-01
- Design Arena Coding
- 1176 Elo2026-09-02
- Design Arena Coding
- 1174 Elo2026-09-03
- Design Arena Coding
- 1173 Elo2026-09-04
- Design Arena UI
- 1182 Elo2026-08-27
- Design Arena UI
- 1201 Elo2026-08-21
- Design Arena UI
- 1191 Elo2026-08-22
- Design Arena UI
- 1185 Elo2026-08-23
- Design Arena UI
- 1175 Elo2026-08-24
- Design Arena UI
- 1181 Elo2026-08-28
- Design Arena UI
- 1183 Elo2026-08-25
- Design Arena UI
- 1183 Elo2026-08-26
- Design Arena UI
- 1181 Elo2026-08-29
- Design Arena UI
- 1181 Elo2026-08-30
- Design Arena UI
- 1181 Elo2026-08-31
- Design Arena UI
- 1182 Elo2026-09-01
- Design Arena UI
- 1182 Elo2026-09-02
- Design Arena UI
- 1180 Elo2026-09-03
- Design Arena UI
- 1178 Elo2026-09-04
- Design Arena Website
- 1172 Elo2026-08-14
- Design Arena Website
- 1167 Elo2026-08-18
- Design Arena Website
- 1155 Elo2026-08-15
- Design Arena Website
- 1167 Elo2026-08-19
- Design Arena Website
- 1160 Elo2026-08-16
- Design Arena Website
- 1167 Elo2026-08-20
- Design Arena Website
- 1183 Elo2026-08-27
- Design Arena Website
- 1162 Elo2026-08-17
- Design Arena Website
- 1181 Elo2026-08-21
- Design Arena Website
- 1181 Elo2026-08-22
- Design Arena Website
- 1181 Elo2026-08-23
- Design Arena Website
- 1185 Elo2026-08-24
- Design Arena Website
- 1183 Elo2026-08-28
- Design Arena Website
- 1184 Elo2026-08-25
- Design Arena Website
- 1183 Elo2026-08-26
- Design Arena Website
- 1182 Elo2026-08-29
- Design Arena Website
- 1182 Elo2026-08-30
- Design Arena Website
- 1182 Elo2026-08-31
- Design Arena Website
- 1182 Elo2026-09-01
- Design Arena Website
- 1181 Elo2026-09-02
- Design Arena Website
- 1179 Elo2026-09-03
- Design Arena Website
- 1178 Elo2026-09-04
- LMArena Agent
- -11.52026-08-12
- LMArena Agent
- -10.12026-08-13
- LMArena Agent
- -12.12026-08-11
- LMArena Agent
- -8.82026-08-24
- LMArena Agent
- -9.42026-08-27
- LMArena Agent
- -9.22026-08-31
- LMArena Creative Writing
- 1291 Elo2026-08-12
- LMArena Creative Writing
- 1288 Elo2026-08-21
- LMArena Creative Writing
- 1288 Elo2026-08-27
- LMArena Creative Writing
- 1292 Elo2026-09-01
- LMArena Instruction Following
- 1362 Elo2026-08-12
- LMArena Instruction Following
- 1359 Elo2026-08-21
- LMArena Instruction Following
- 1359 Elo2026-08-27
- LMArena Instruction Following
- 1359 Elo2026-09-01
- LMArena Long Query
- 1380 Elo2026-08-12
- LMArena Long Query
- 1377 Elo2026-08-21
- LMArena Long Query
- 1378 Elo2026-08-27
- LMArena Long Query
- 1378 Elo2026-09-01
- LMArena Text
- 1376 Elo2026-08-21
- LMArena Text
- 1378 Elo2026-08-12
- LMArena Text
- 1376 Elo2026-08-27
- LMArena Text
- 1377 Elo2026-09-01
- LMArena WebDev
- 1372 Elo2026-08-12
- LMArena WebDev
- 1371 Elo2026-08-14
- LMArena WebDev
- 1371 Elo2026-08-21
- LMArena WebDev
- 1370 Elo2026-08-30
- LMArena WebDev
- 1370 Elo2026-09-01
LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. Design Arena uses blind human preference.
Task evidence
How broad is the support?
Each status is exact to this model version and the selected task. Official release claims remain provisional.
- Best LLM for Frontend & UIEstablished evidence
90% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Business WritingProvisional evidence
70% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Marketing CopyProvisional evidence
70% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Chat & RoleplayProvisional evidence
70% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Roleplay & CharacterProvisional evidence
70% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Creative WritingProvisional evidence
60% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for WritingProvisional evidence
60% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for a General AssistantProvisional evidence
55% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Code CompletionProvisional evidence
44% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for CodingProvisional evidence
42% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 8 of 8 configured evaluation feeds currently have results.
- Best Value LLMProvisional evidence
36% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or Route reliability. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Logic & Problem SolvingProvisional evidence
35% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.
- Best Open-Weight LLM for Self-HostingProvisional evidence
33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or Route reliability. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Hermes AgentProvisional evidence
33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for OpenHandsProvisional evidence
33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for GooseProvisional evidence
33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for OpenClawProvisional evidence
33% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or SWE-rebench. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Fast SummariesProvisional evidence
29% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or Route reliability. 3 of 4 configured evaluation feeds currently have results.
- Best Local LLM for CodingProvisional evidence
26% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Literary TranslationProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 4 of 5 configured evaluation feeds currently have results.
- Best Cheap LLM for High VolumeProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or Route reliability. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Everyday TranslationProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 4 of 5 configured evaluation feeds currently have results.
- Cheapest Capable LLMProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or Route reliability. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for TranslationProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 4 of 5 configured evaluation feeds currently have results.
- Best LLM for Debugging & Code ReviewProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 6 of 6 configured evaluation feeds currently have results.
- Best LLM for Tool & Function CallingProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Search. 4 of 5 configured evaluation feeds currently have results.
- Best LLM for Massive ContextProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LMArena Document or LongBench v2. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Computer & Browser UseProvisional evidence
25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or OSWorld Verified. 4 of 4 configured evaluation feeds currently have results.
- Best LLM for Document SummarizationProvisional evidence
20% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from FACTS Grounding or LiveBench Instruction Following. 4 of 6 configured evaluation feeds currently have results.
- Best LLM for SummarizationProvisional evidence
20% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from FACTS Grounding or LiveBench Instruction Following. 4 of 6 configured evaluation feeds currently have results.
- Best LLM for RAG & Long ContextProvisional evidence
18% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from FACTS Grounding or LMArena Document. 4 of 6 configured evaluation feeds currently have results.
- Best LLM for AI AgentsProvisional evidence
17% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Agentic Coding. 7 of 7 configured evaluation feeds currently have results.
- Best LLM for JSON & Schema OutputProvisional evidence
17% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Data Analysis. 4 of 5 configured evaluation feeds currently have results.
- Best LLM for Structured Data ExtractionProvisional evidence
17% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Data Analysis. 4 of 5 configured evaluation feeds currently have results.
- Best LLM for Competition MathProvisional evidence
15% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Mathematics or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Math & ReasoningProvisional evidence
15% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Mathematics or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Agentic CodingProvisional evidence
14% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Design Arena Full-stack or Design Arena Web-apps. 8 of 8 configured evaluation feeds currently have results.
- Best LLM for Autonomous AgentsProvisional evidence
13% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Frontier-Bench or LiveBench Agentic Coding. 7 of 7 configured evaluation feeds currently have results.
- Best LLM for High-Volume ExtractionProvisional evidence
13% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Data Analysis or Route reliability. 2 of 4 configured evaluation feeds currently have results.
- Best LLM for OCR & DocumentsProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.
- Best LLM for Image UnderstandingProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Reasoning or LMArena Vision. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Vision & DocumentsProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.
- Best LLM for Grounded RAGProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from CRAG or FACTS Grounding. 2 of 5 configured evaluation feeds currently have results.
- Best LLM for Charts & DiagramsProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.
- Best LLM for Document ParsingProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. The task evidence panel above says exactly what is confirmed and what is still missing.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.