GPT-5.1-Codex-Mini
openai/gpt-5.1-codex-mini-20251113
OpenAI's GPT-5.1-Codex-Mini, released on 2025-01-01, processes image and text inputs to generate text output, with a context length of 400,000 tokens and
- tool use
- structured outputs
- reasoning
At a glance
Specifications
What the API gives you
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input price
- $0.25 / 1M tokens
- Output price
- $2 / 1M tokens
- Cache read
- $0.030 / 1M tokens
- Modalities
- image, text → text
- Knowledge cutoff
- —
- Released
- Jan 1, 2025
Measured evidence
Public benchmark record
- Design Arena Coding
- 1124 Elo2026-07-28
- Design Arena Coding
- 1124 Elo2026-07-27
- Design Arena Coding
- 1124 Elo2026-07-30
- Design Arena Coding
- 1124 Elo2026-07-29
- Design Arena Coding
- 1124 Elo2026-07-31
- Design Arena Coding
- 1123 Elo2026-08-02
- Design Arena Coding
- 1122 Elo2026-08-05
- Design Arena Coding
- 1123 Elo2026-08-01
- Design Arena Coding
- 1121 Elo2026-08-09
- Design Arena Coding
- 1123 Elo2026-08-03
- Design Arena Coding
- 1123 Elo2026-08-04
- Design Arena Coding
- 1119 Elo2026-08-14
- Design Arena Coding
- 1123 Elo2026-08-06
- Design Arena Coding
- 1121 Elo2026-08-10
- Design Arena Coding
- 1123 Elo2026-08-07
- Design Arena Coding
- 1113 Elo2026-08-18
- Design Arena Coding
- 1122 Elo2026-08-08
- Design Arena Coding
- 1113 Elo2026-08-15
- Design Arena Coding
- 1121 Elo2026-08-11
- Design Arena Coding
- 1120 Elo2026-08-12
- Design Arena Coding
- 1119 Elo2026-08-13
- Design Arena Coding
- 1112 Elo2026-08-19
- Design Arena Coding
- 1118 Elo2026-08-27
- Design Arena Coding
- 1112 Elo2026-08-20
- Design Arena Coding
- 1113 Elo2026-08-16
- Design Arena Coding
- 1110 Elo2026-09-05
- Design Arena Coding
- 1113 Elo2026-08-17
- Design Arena Coding
- 1118 Elo2026-08-21
- Design Arena Coding
- 1118 Elo2026-08-22
- Design Arena Coding
- 1119 Elo2026-08-23
- Design Arena Coding
- 1118 Elo2026-08-28
- Design Arena Coding
- 1119 Elo2026-08-24
- Design Arena Coding
- 1119 Elo2026-08-25
- Design Arena Coding
- 1119 Elo2026-08-26
- Design Arena Coding
- 1110 Elo2026-09-06
- Design Arena Coding
- 1118 Elo2026-08-29
- Design Arena Coding
- 1117 Elo2026-08-30
- Design Arena Coding
- 1118 Elo2026-08-31
- Design Arena Coding
- 1118 Elo2026-09-01
- Design Arena Coding
- 1116 Elo2026-09-02
- Design Arena Coding
- 1114 Elo2026-09-03
- Design Arena Coding
- 1113 Elo2026-09-04
- Design Arena UI
- 1116 Elo2026-07-28
- Design Arena UI
- 1117 Elo2026-07-27
- Design Arena UI
- 1116 Elo2026-07-30
- Design Arena UI
- 1117 Elo2026-07-29
- Design Arena UI
- 1116 Elo2026-07-31
- Design Arena UI
- 1117 Elo2026-08-02
- Design Arena UI
- 1117 Elo2026-08-01
- Design Arena UI
- 1116 Elo2026-08-05
- Design Arena UI
- 1113 Elo2026-08-09
- Design Arena UI
- 1117 Elo2026-08-03
- Design Arena UI
- 1116 Elo2026-08-04
- Design Arena UI
- 1111 Elo2026-08-14
- Design Arena UI
- 1116 Elo2026-08-06
- Design Arena UI
- 1115 Elo2026-08-07
- Design Arena UI
- 1114 Elo2026-08-10
- Design Arena UI
- 1114 Elo2026-08-08
- Design Arena UI
- 1108 Elo2026-08-18
- Design Arena UI
- 1114 Elo2026-08-11
- Design Arena UI
- 1109 Elo2026-08-15
- Design Arena UI
- 1114 Elo2026-08-12
- Design Arena UI
- 1114 Elo2026-08-13
- Design Arena UI
- 1108 Elo2026-08-19
- Design Arena UI
- 1108 Elo2026-08-16
- Design Arena UI
- 1108 Elo2026-08-20
- Design Arena UI
- 1107 Elo2026-08-27
- Design Arena UI
- 1108 Elo2026-08-17
- Design Arena UI
- 1103 Elo2026-09-05
- Design Arena UI
- 1108 Elo2026-08-21
- Design Arena UI
- 1108 Elo2026-08-22
- Design Arena UI
- 1108 Elo2026-08-23
- Design Arena UI
- 1108 Elo2026-08-24
- Design Arena UI
- 1107 Elo2026-08-28
- Design Arena UI
- 1108 Elo2026-08-25
- Design Arena UI
- 1108 Elo2026-08-26
- Design Arena UI
- 1104 Elo2026-09-06
- Design Arena UI
- 1107 Elo2026-08-29
- Design Arena UI
- 1107 Elo2026-08-30
- Design Arena UI
- 1107 Elo2026-08-31
- Design Arena UI
- 1107 Elo2026-09-01
- Design Arena UI
- 1106 Elo2026-09-02
- Design Arena UI
- 1104 Elo2026-09-03
- Design Arena UI
- 1103 Elo2026-09-04
- Design Arena Website
- 1135 Elo2026-07-28
- Design Arena Website
- 1135 Elo2026-07-30
- Design Arena Website
- 1135 Elo2026-07-27
- Design Arena Website
- 1135 Elo2026-07-29
- Design Arena Website
- 1135 Elo2026-07-31
- Design Arena Website
- 1134 Elo2026-08-02
- Design Arena Website
- 1134 Elo2026-08-01
- Design Arena Website
- 1134 Elo2026-08-05
- Design Arena Website
- 1134 Elo2026-08-03
- Design Arena Website
- 1133 Elo2026-08-09
- Design Arena Website
- 1134 Elo2026-08-04
- Design Arena Website
- 1130 Elo2026-08-14
- Design Arena Website
- 1134 Elo2026-08-06
- Design Arena Website
- 1134 Elo2026-08-07
- Design Arena Website
- 1133 Elo2026-08-10
- Design Arena Website
- 1133 Elo2026-08-08
- Design Arena Website
- 1122 Elo2026-08-18
- Design Arena Website
- 1133 Elo2026-08-11
- Design Arena Website
- 1122 Elo2026-08-15
- Design Arena Website
- 1132 Elo2026-08-12
- Design Arena Website
- 1131 Elo2026-08-13
- Design Arena Website
- 1122 Elo2026-08-19
- Design Arena Website
- 1122 Elo2026-08-16
- Design Arena Website
- 1122 Elo2026-08-20
- Design Arena Website
- 1130 Elo2026-08-27
- Design Arena Website
- 1122 Elo2026-08-17
- Design Arena Website
- 1126 Elo2026-09-05
- Design Arena Website
- 1130 Elo2026-08-21
- Design Arena Website
- 1131 Elo2026-08-22
- Design Arena Website
- 1131 Elo2026-08-23
- Design Arena Website
- 1131 Elo2026-08-24
- Design Arena Website
- 1131 Elo2026-08-28
- Design Arena Website
- 1131 Elo2026-08-25
- Design Arena Website
- 1131 Elo2026-08-26
- Design Arena Website
- 1124 Elo2026-09-06
- Design Arena Website
- 1130 Elo2026-08-29
- Design Arena Website
- 1130 Elo2026-08-30
- Design Arena Website
- 1130 Elo2026-08-31
- Design Arena Website
- 1130 Elo2026-09-01
- Design Arena Website
- 1129 Elo2026-09-02
- Design Arena Website
- 1127 Elo2026-09-03
- Design Arena Website
- 1126 Elo2026-09-04
- LMArena WebDev
- 1240 Elo2026-07-16
- LMArena WebDev
- 1240 Elo2026-07-20
- LMArena WebDev
- 1240 Elo2026-07-21
- LMArena WebDev
- 1244 Elo2026-07-27
- LMArena WebDev
- 1244 Elo2026-07-24
- LMArena WebDev
- 1244 Elo2026-07-28
- LMArena WebDev
- 1244 Elo2026-07-30
- LMArena WebDev
- 1244 Elo2026-08-01
- LMArena WebDev
- 1244 Elo2026-07-31
- LMArena WebDev
- 1244 Elo2026-08-06
- LMArena WebDev
- 1244 Elo2026-08-02
- LMArena WebDev
- 1244 Elo2026-08-12
- LMArena WebDev
- 1243 Elo2026-08-10
- LMArena WebDev
- 1244 Elo2026-08-14
- LMArena WebDev
- 1243 Elo2026-09-01
- LMArena WebDev
- 1244 Elo2026-09-05
- LMArena WebDev
- 1244 Elo2026-08-21
- LMArena WebDev
- 1243 Elo2026-08-30
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 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 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 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 Cheap LLM for High VolumeProvisional evidence
17% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.
- Cheapest Capable LLMProvisional evidence
17% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Fast SummariesProvisional evidence
14% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.
- Best Value LLMProvisional evidence
14% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 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 Literary TranslationProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 Everyday TranslationProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 TranslationProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 Document SummarizationProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 Tool & Function CallingProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 4 of 5 configured evaluation feeds currently have results.
- Best LLM for Business WritingProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Creative Writing. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for Logic & Problem SolvingProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 Marketing CopyProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Creative Writing. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for SummarizationProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 Chat & RoleplayProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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
10% of intended weighted task evidence across 0 independent sources; 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 Computer & Browser UseProvisional evidence
10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 4 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 WritingProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 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 Roleplay & CharacterProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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 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.
- Best LLM for a General AssistantProvisional evidence
10% of intended weighted task evidence across 0 independent sources; 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
8% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Massive ContextProvisional evidence
6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Long Query. 3 of 4 configured evaluation feeds currently have results.
- Best LLM for Hermes AgentProvisional evidence
6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for OpenHandsProvisional evidence
6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for GooseProvisional evidence
6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for RAG & Long ContextProvisional evidence
6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from FACTS Grounding or LMArena Document. 4 of 6 configured evaluation feeds currently have results.
- Best LLM for OpenClawProvisional evidence
6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for JSON & Schema OutputProvisional evidence
6% of intended weighted task evidence across 0 independent sources; 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
6% of intended weighted task evidence across 0 independent sources; 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
5% of intended weighted task evidence across 0 independent sources; 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
5% of intended weighted task evidence across 0 independent sources; 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
5% of intended weighted task evidence across 0 independent sources; 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 Math & ReasoningProvisional evidence
5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Mathematics or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.
- Best LLM for AI AgentsProvisional evidence
5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Agentic Coding. 7 of 7 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.