# SpaceXAI Grok 4.3 As of October 22, 2026, SpaceXAI Grok 4.3 ranks #63 of 123 models overall with 53.1 ±10.0 on the LLMBenchmark Index. Grok 4.3 ranks #45 of 122 in reasoning, its strongest category. SpaceXAI Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens. Grok 4.3 was released on April 30, 2026. Page: https://llmbenchmark.ai/models/grok-4-3 Data from October 22, 2026. Every figure below names the board it was read from and the day. - Maker: xAI - Released: April 30, 2026 - Price per million input tokens: $1.25 - Price per million output tokens: $2.50 - Context window: 1M tokens - Overall rank: 63 of 123, by the LLMBenchmark Index - LLMBenchmark Index: 53.1 ±10.0 (90% margin, from 6 of 7 inputs) - Artificial Analysis Intelligence Index: 24.9 - Vibe Coding Index: 37.4 (from 3 of 6 coding benchmarks) Benchmark results (105 of 195): - LMArena WebDev: 1358 Elo (source: LMArena WebDev, read October 22, 2026) - GPQA Diamond: 91.4% (source: GPQA (Vals AI), read October 22, 2026) - MMLU Pro: 85.8% (source: MMLU Pro (Vals AI), read October 22, 2026) - AA Intelligence Index: 24.9 (source: Artificial Analysis (via OpenRouter), read October 22, 2026) - AA Coding Index: 42.2 (source: Artificial Analysis (via OpenRouter), read October 22, 2026) - AA Agentic Index: 15.5 (source: Artificial Analysis (via OpenRouter), read October 22, 2026) - Design Arena: websites: 1196 Elo (source: Design Arena, read October 22, 2026) - Design Arena: UI components: 1190 Elo (source: Design Arena, read October 22, 2026) - Design Arena: game dev: 1173 Elo (source: Design Arena, read October 22, 2026) - Design Arena: data viz: 1179 Elo (source: Design Arena, read October 22, 2026) - Design Arena: 3D: 1124 Elo (source: Design Arena, read October 22, 2026) - Design Arena: all code categories: 1186 Elo (source: Design Arena, read October 22, 2026) - Design Arena: SVG: 1080 Elo (source: Design Arena, read October 22, 2026) - Design Arena: ASCII art: 1125 Elo (source: Design Arena, read October 22, 2026) - Design Arena: agents building web apps: 1126 Elo (source: Design Arena, read October 22, 2026) - Design Arena: agents building full-stack apps: 1006 Elo (source: Design Arena, read October 22, 2026) - Design Arena: agents building mobile apps: 1058 Elo (source: Design Arena, read October 22, 2026) - Design Arena: agents building Android apps: 962 Elo (source: Design Arena, read October 22, 2026) - Design Arena: agents building Godot games: 914 Elo (source: Design Arena, read October 22, 2026) - Design Arena: agents building games: 1007 Elo (source: Design Arena, read October 22, 2026) - Design Arena: HTML slides: 959 Elo (source: Design Arena, read October 22, 2026) - Design Arena: PowerPoint slides: 988 Elo (source: Design Arena, read October 22, 2026) - Design Arena: spreadsheets: 879 Elo (source: Design Arena, read October 22, 2026) - LiveCodeBench (Vals AI): 84.5% (source: Vals AI boards, read October 22, 2026) - SWE-bench Verified (Vals AI): 71.4% (source: Vals AI boards, read October 22, 2026) - Vibe Code Bench (Vals AI): 19.4% (source: Vals AI boards, read October 22, 2026) - Code migration (Vals AI): 6.8% (source: Vals AI boards, read October 22, 2026) - ProgramBench (Vals AI): 0.0% (source: Vals AI boards, read October 22, 2026) - Terminal-Bench 2.1 (Vals AI): 42.0% (source: Vals AI boards, read October 22, 2026) - SkillsBench (Vals AI): 40.6% (source: Vals AI boards, read October 22, 2026) - Finance Agent (Vals AI): 37.7% (source: Vals AI boards, read October 22, 2026) - Tax Agent Bench (Vals AI): 6.2% (source: Vals AI boards, read October 22, 2026) - Legal Research Bench (Vals AI): 15.4% (source: Vals AI boards, read October 22, 2026) - Excel Modeling Benchmark (Vals AI): 18.4% (source: Vals AI boards, read October 22, 2026) - Public Benefits Bench (Vals AI): 51.7% (source: Vals AI boards, read October 22, 2026) - MMMU Pro (Vals AI): 83.1% (source: Vals AI boards, read October 22, 2026) - SAGE (Vals AI): 19.7% (source: Vals AI boards, read October 22, 2026) - LegalBench (Vals AI): 84.5% (source: Vals AI boards, read October 22, 2026) - CaseLaw (Vals AI): 79.3% (source: Vals AI boards, read October 22, 2026) - CorpFin (Vals AI): 68.5% (source: Vals AI boards, read October 22, 2026) - TaxEval (Vals AI): 70.8% (source: Vals AI boards, read October 22, 2026) - MortgageTax (Vals AI): 48.3% (source: Vals AI boards, read October 22, 2026) - MedCode (Vals AI): 38.1% (source: Vals AI boards, read October 22, 2026) - MedScribe (Vals AI): 74.4% (source: Vals AI boards, read October 22, 2026) - Vals Multimodal Index: 43.3% (source: Vals AI boards, read October 22, 2026) - GPQA Diamond (Artificial Analysis run): 90.1% (source: Artificial Analysis, read October 22, 2026) - Humanity's Last Exam (Artificial Analysis run): 37.2% (source: Artificial Analysis, read October 22, 2026) - SciCode: 48.3% (source: Artificial Analysis, read October 22, 2026) - Terminal-Bench Hard (Artificial Analysis run): 37.9% (source: Artificial Analysis, read October 22, 2026) - IFBench: 83.3% (source: Artificial Analysis, read October 22, 2026) - Long context reasoning (AA-LCR): 75.0% (source: Artificial Analysis, read October 22, 2026) - τ²-Bench Telecom: 97.7% (source: Artificial Analysis, read October 22, 2026) - WeirdML: 49.9% (source: Epoch AI benchmarking hub, read October 22, 2026) - GPQA Diamond (Epoch AI run): 88.8% (source: Epoch AI benchmarking hub, read October 22, 2026) - Chess puzzles: 18.0% (source: Epoch AI benchmarking hub, read October 22, 2026) - OTIS Mock AIME: 93.3% (source: Epoch AI benchmarking hub, read October 22, 2026) - FrontierMath, tiers 1 to 3: 42.8% (source: Epoch AI benchmarking hub, read October 22, 2026) - FrontierMath, tier 4: 14.6% (source: Epoch AI benchmarking hub, read October 22, 2026) - ProofBench: 11.0% (source: Epoch AI benchmarking hub, read October 22, 2026) - SimpleQA Verified: 33.2% (source: Epoch AI benchmarking hub, read October 22, 2026) - DTBench: 90.7% (source: Epoch AI benchmarking hub, read October 22, 2026) - LMCA: 38.3% (source: Epoch AI benchmarking hub, read October 22, 2026) - ALE-Bench: 944.2 (source: ALE-Bench (Sakana AI), read October 22, 2026) - Vending-Bench 2: $35 (source: Epoch AI benchmarking hub, read October 22, 2026) - LMArena Text: 1397 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: coding: 1415 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: hard prompts: 1396 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: math: 1387 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: instruction following: 1366 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: creative writing: 1380 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: 1229 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: English: 1404 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: non-English: 1385 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: Chinese: 1422 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: German: 1395 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: Japanese: 1379 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: Korean: 1354 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: French: 1411 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: Spanish: 1399 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: Russian: 1399 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: Polish: 1398 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: multi-turn: 1406 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: longer queries: 1393 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: expert: 1384 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: hard prompts in English: 1402 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: software and IT: 1416 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: mathematical work: 1396 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: science: 1399 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: medicine and healthcare: 1384 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: legal and government: 1386 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: business and finance: 1381 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: writing and language: 1385 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Text: entertainment and media: 1370 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena WebDev: React: 1353 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena WebDev: HTML: 1367 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena WebDev: from an image: 1375 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: English: 1235 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: Chinese: 1257 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: reading text: 1235 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: diagrams: 1241 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: homework: 1241 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: humor: 1222 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: recognizing things: 1217 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Vision: creative writing: 1237 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026) - LMArena Search: 1166 Elo (source: LMArena (Hugging Face dataset), read October 22, 2026)