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GPT-5.6 Sol vs Grok 4.6

OpenAI against xAI. Prices, scores and speed below are live.

  • Grok 4.6 costs 63% less on blended price ($4.50 against $12.00 per 1M tokens, 3 input to 1 output).
  • GPT-5.6 Sol scores higher on the Artificial Analysis Intelligence Index: 47.1 against 44.4.
  • On the 32 benchmarks both have scores on, GPT-5.6 Sol leads on 21 and Grok 4.6 on 11.
  • GPT-5.6 Sol reads more context: 1.1M tokens against 500K.
  • Grok 4.6 is newer: listed Aug 12, 2026, against Jul 9, 2026.
Run both on your promptGPT-5.6 SolGrok 4.6

Side by side

GPT-5.6 SolGrok 4.6
LabOpenAIxAI
ListedJul 9, 2026Aug 12, 2026
Input per 1M tokens$6.00$3.00
Output per 1M tokens$30.00$9.00
Cached input per 1M$0.60$0.75
Blended (3:1) per 1M$12.00$4.50
Context window1.1M500K
Max output128K450K
Knowledge cutoff2026-02-16-
Intelligence index47.144.4
Coding index78.376.8
ReasoningYesYes
Reads imagesYesYes
Tool useYesYes
Structured outputYesYes

Every benchmark both are scored on

Each model's best score per benchmark, with its source. Scores from different sources or settings are not always comparable; each links to where it was published.

BenchmarkGPT-5.6 SolGrok 4.6
AIME68.9%Epoch AI99.2%Epoch AI
APEX-Agents39.9%Epoch AI65.3%Epoch AI
ARC-AGI-197.5%Epoch AI87.5%Epoch AI
ARC-AGI-292.5%Epoch AI67.1%Epoch AI
Artificial Analysis Agentic Index47.4Artificial Analysis and OpenRouter53Artificial Analysis and OpenRouter
Artificial Analysis Coding Index78.3Artificial Analysis and OpenRouter76.8Artificial Analysis and OpenRouter
Artificial Analysis Intelligence Index47.1Artificial Analysis and OpenRouter44.4Artificial Analysis and OpenRouter
Chess Puzzles59%Epoch AI33%Epoch AI
DeepSWE72.7%Epoch AI67.5%Epoch AI
DTBench95.7%Epoch AI97.3%Epoch AI
Earthborne Rangers (EBR-bench)44.8Epoch AI30.5Epoch AI
FrontierCode47.5Epoch AI48Epoch AI
FrontierMath Tier 4 (v2)82.9%Epoch AI31.7%Epoch AI
FrontierMath Tiers 1-3 (v2)89.1%Epoch AI66%Epoch AI
GPQA Diamond92.4%Artificial Analysis and OpenRouter92.8%Artificial Analysis and OpenRouter
LMArena (Coding)1495 EloLMArena1464 EloLMArena
LMArena (Overall)1457 EloLMArena1429 EloLMArena
LMArena: Creative Writing1450 EloLMArena1426 EloLMArena
LMArena: Hard Prompts1483 EloLMArena1447 EloLMArena
LMArena: Longer Query1480 EloLMArena1456 EloLMArena
LMArena: Math1494 EloLMArena1461 EloLMArena
LMArena: Multi-Turn1461 EloLMArena1425 EloLMArena
LMCA58.5Epoch AI48.5Epoch AI
MirrorCode (ML, +Private, 2L)20Epoch AI41.1Epoch AI
Mystery Game Puzzles26%Epoch AI34%Epoch AI
ProofBench83%Epoch AI51%Epoch AI
SciCode57.8%Epoch AI56.5%Epoch AI
SimpleBench64.8%Epoch AI75.9%Epoch AI
SimpleQA Verified69.7%Epoch AI49.3%Epoch AI
tau-bench (Airline)73.3%Artificial Analysis and OpenRouter75.3%Artificial Analysis and OpenRouter
WebDev Arena1617 EloEpoch AI1618 EloEpoch AI
WeirdML88.8%Epoch AI67.3%Epoch AI

More comparisons

Where these figures come from

Prices are GenMagic's own, what the studio and the API charge, recomputed from each provider's price list every few minutes. The indices are the Artificial Analysis indices, and every benchmark score links to its source, re-read daily. Measured speed is GenMagic's own generation records, in aggregate. See OpenAI models, xAI models, every LLM's price and our sources.