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GPT-6 Astra vs Grok 4.7

GPT-6 Astra leads Grok 4.7 on coding, 85.1 to 66.7 on the Vibe Coding Index, and Grok 4.7 costs 8.3x less per output token ($6.00 vs $50.00 per million). Updated October 22, 2026; 100 benchmarks have a result for both.

Replace GPT-6 Astra Replace Grok 4.7
GPT-6 AstraOpenAI
Coding
85.1
Overall
83.0
Output $/M
$50.00
92
Grok 4.7xAI
Coding
66.7
Overall
66.6
Output $/M
$6.00
8
vs boards won of 100 shared

GPT-6 Astra or Grok 4.7: which to pick

Pick GPT-6 Astra for coding: it scores 85.1 on the Vibe Coding Index against 66.7 for Grok 4.7.

Pick Grok 4.7 for output tokens 8.3x cheaper ($6.00 vs $50.00 per million) and work measured by CyberBench (Vals AI) or SciCode, where it leads.

Model AGPT-6 AstraOpenAI85.1/1005 independent benchmarksNo cost per solved taskModel BGrok 4.7xAI66.7/1005 independent benchmarksNo cost per solved task
Shared results
100
GPT-6 Astra only
29
Grok 4.7 only
2
Like-for-like categories
8 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
GPT-6 Astra 85.1 from 5 benchmarks, Grok 4.7 66.7 from 5 benchmarks.
Widest category
Math, 36.3 points apart on average over 7 shared benchmarks.
Widest single gap
FrontierMath, tier 4: GPT-6 Astra 97.6% against Grok 4.7 17.1%, 80.5 points apart on a 0 to 100 scale.
Output price
GPT-6 Astra $50.00 against Grok 4.7 $6.00 per million output tokens, 8.3x apart.
Context window
GPT-6 Astra takes 1.05M tokens, Grok 4.7 500K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGPT-6 AstraBarsGrok 4.7Ties
Coding162
Intelligence20
Agentic work114
Reasoning140
Math70
Knowledge61
Web design70
General291
All shared boards928
CodingLike-for-likeSix of these boards feed the Vibe Coding Index162
Coding benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
LiveBench coding93.7%84.5%GPT-6 Astra
LMArena WebDev17741637GPT-6 Astra
AA Coding Index76.9Not measuredOnly GPT-6 Astra measured
Terminal-Bench 4 (Vals AI)59.6%28.8%GPT-6 Astra
Vibe Code Bench (Vals AI)89.6%86.2%GPT-6 Astra
Code migration (Vals AI)67.7%44.8%GPT-6 Astra
ProgramBench (Vals AI)5.5%0.5%GPT-6 Astra
IOI (Vals AI)100.0%57.7%GPT-6 Astra
Terminal-Bench 2.1 (Vals AI)87.3%73.4%GPT-6 Astra
SWE-bench Multimodal (Vals AI)43.3%42.9%GPT-6 Astra
Vibe Code Bench 1-100 (Vals AI)27.6%Not measuredOnly GPT-6 Astra measured
CyberBench (Vals AI)41.1%69.5%Grok 4.7
SciCode56.5%57.8%Grok 4.7
FrontierCode53.3%47.6%GPT-6 Astra
FrontierSWE65.5%29.5%GPT-6 Astra
GSO-Bench79.4%Not measuredOnly GPT-6 Astra measured
WeirdML93.3%Not measuredOnly GPT-6 Astra measured
MirrorCode46.7%Not measuredOnly GPT-6 Astra measured
ALE-Bench2951.3Not measuredOnly GPT-6 Astra measured
LMArena Text: coding14891432GPT-6 Astra
LMArena Text: software and IT14741421GPT-6 Astra
LMArena WebDev: React17981663GPT-6 Astra
LMArena WebDev: HTML17751627GPT-6 Astra
LMArena WebDev: from an image17261586GPT-6 Astra
SciCode12.3%Not measuredOnly GPT-6 Astra measured
SWE-Bench Pro V296.9%Not measuredOnly GPT-6 Astra measured
SWE Atlas: Codebase QnA59.1%Not measuredOnly GPT-6 Astra measured
SWE Atlas: Refactoring59.1%Not measuredOnly GPT-6 Astra measured
SWE Atlas: Test Writing50.7%Not measuredOnly GPT-6 Astra measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
AA Intelligence Index52.746.4GPT-6 Astra
Epoch Capabilities Index168.8154.4GPT-6 Astra
Agentic workLike-for-likePublic boards, shown as published, kept out of the index114
Agentic work benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
AA Agentic Index51.0Not measuredOnly GPT-6 Astra measured
Design Arena: agents building web apps1374Not measuredOnly GPT-6 Astra measured
Design Arena: agents building full-stack apps1357Not measuredOnly GPT-6 Astra measured
Design Arena: agents building mobile apps1312Not measuredOnly GPT-6 Astra measured
Design Arena: agents building Godot games1348Not measuredOnly GPT-6 Astra measured
Design Arena: PowerPoint slides1217Not measuredOnly GPT-6 Astra measured
Design Arena: spreadsheets1378Not measuredOnly GPT-6 Astra measured
LiveBench research85.2%86.4%Grok 4.7
LiveBench browser84.0%60.0%GPT-6 Astra
LiveBench long agentic82.4%50.1%GPT-6 Astra
SREBench (Vals AI)56.9%3.8%GPT-6 Astra
Finance Agent (Vals AI)53.5%52.3%GPT-6 Astra
Tax Agent Bench (Vals AI)20.7%34.2%Grok 4.7
Legal Research Bench (Vals AI)39.4%47.1%Grok 4.7
Harvey's Legal Agent Benchmark (Vals AI)7.1%18.3%Grok 4.7
Excel Modeling Benchmark (Vals AI)71.7%67.0%GPT-6 Astra
BioMysteryBench (Vals AI)79.3%69.3%GPT-6 Astra
Terminal-Bench-Science (Vals AI)62.9%10.0%GPT-6 Astra
Vals Science Index65.1%34.8%GPT-6 Astra
Time Horizon Index (Vals AI)90.5%Not measuredOnly GPT-6 Astra measured
CUA-bench (Vals AI)19.2%Not measuredOnly GPT-6 Astra measured
Robo-bench (Vals AI)23.3%0.2%GPT-6 Astra
APEX-Agents64.7%54.6%GPT-6 Astra
Remote Labor Index20.8%Not measuredOnly GPT-6 Astra measured
BALROG68.3%Not measuredOnly GPT-6 Astra measured
SpireClimb25.7%Not measuredOnly GPT-6 Astra measured
Vending-Bench 2$15,515$10,537GPT-6 Astra
Neither model has a result on the other 15 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index140
Reasoning benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
LiveBench reasoning92.7%82.7%GPT-6 Astra
MysteryMechanism (Vals AI)53.1%25.2%GPT-6 Astra
GPQA Diamond (Artificial Analysis run)96.3%Not measuredOnly GPT-6 Astra measured
Humanity's Last Exam (Artificial Analysis run)54.7%43.1%GPT-6 Astra
GPQA Diamond (Epoch AI run)95.8%92.7%GPT-6 Astra
ARC-AGI98.5%90.2%GPT-6 Astra
ARC-AGI-295.0%61.4%GPT-6 Astra
Chess puzzles74.0%41.0%GPT-6 Astra
Mystery game puzzles84.0%29.0%GPT-6 Astra
EBR-bench76.2%Not measuredOnly GPT-6 Astra measured
LMArena Text: hard prompts14631415GPT-6 Astra
LMArena Text: expert14891439GPT-6 Astra
LMArena Text: hard prompts in English14641427GPT-6 Astra
LMArena Vision: diagrams12971254GPT-6 Astra
LMArena Vision: homework13371309GPT-6 Astra
Humanity's Last Exam (Scale run)60.6%23.4%GPT-6 Astra
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index70
Math benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
OTIS Mock AIME100.0%98.1%GPT-6 Astra
FrontierMath, tiers 1 to 393.7%53.0%GPT-6 Astra
FrontierMath, tier 497.6%17.1%GPT-6 Astra
ProofBench99.0%26.0%GPT-6 Astra
LMArena Text: math14651414GPT-6 Astra
LMArena Text: mathematical work14841435GPT-6 Astra
MathArena81.9%41.1%GPT-6 Astra
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index61
Knowledge benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
LegalBench (Vals AI)Not measured84.4%Only Grok 4.7 measured
MedCode (Vals AI)48.5%49.5%Grok 4.7
SimpleQA Verified75.6%56.0%GPT-6 Astra
LMArena Text: science14511419GPT-6 Astra
LMArena Text: medicine and healthcare14251395GPT-6 Astra
LMArena Text: legal and government14621423GPT-6 Astra
LMArena Text: business and finance14391389GPT-6 Astra
FACTS Benchmark Suite75.7%Not measuredOnly GPT-6 Astra measured
PRBench Finance47.5%Not measuredOnly GPT-6 Astra measured
PRBench Legal48.4%47.6%GPT-6 Astra
Neither model has a result on the other 10 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index70
Web design benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
Design Arena: websites13361254GPT-6 Astra
Design Arena: UI components13941276GPT-6 Astra
Design Arena: game dev14801314GPT-6 Astra
Design Arena: data viz13341238GPT-6 Astra
Design Arena: 3D15001274GPT-6 Astra
Design Arena: all code categories13791272GPT-6 Astra
Design Arena: SVG1430Not measuredOnly GPT-6 Astra measured
Design Arena: ASCII art1353Not measuredOnly GPT-6 Astra measured
LiveBench design82.0%78.0%GPT-6 Astra
GeneralLike-for-likePublic boards, shown as published, kept out of the index291
General benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
Vals Index65.0%58.6%GPT-6 Astra
LiveBench data analysis83.0%76.9%GPT-6 Astra
Public Benefits Bench (Vals AI)Not measured65.6%Only Grok 4.7 measured
SAGE (Vals AI)46.4%40.8%GPT-6 Astra
MedScribe (Vals AI)87.9%89.4%Grok 4.7
Long context reasoning (AA-LCR)80.7%80.0%GPT-6 Astra
DTBench97.3%96.0%GPT-6 Astra
LMCA64.4%49.4%GPT-6 Astra
Furniture assembly80.0%20.8%GPT-6 Astra
LMArena Text14411399GPT-6 Astra
LMArena Text: instruction following14551406GPT-6 Astra
LMArena Text: creative writing14201381GPT-6 Astra
LMArena Vision12801231GPT-6 Astra
LMArena Text: English14471411GPT-6 Astra
LMArena Text: non-English14321386GPT-6 Astra
LMArena Text: Chinese14891449GPT-6 Astra
LMArena Text: German14591366GPT-6 Astra
LMArena Text: Japanese14051359GPT-6 Astra
LMArena Text: Korean14281383GPT-6 Astra
LMArena Text: French14321431GPT-6 Astra
LMArena Text: Spanish14221406GPT-6 Astra
LMArena Text: Russian14381399GPT-6 Astra
LMArena Text: Polish14221420GPT-6 Astra
LMArena Text: multi-turn14471394GPT-6 Astra
LMArena Text: longer queries14601416GPT-6 Astra
LMArena Text: writing and language14371394GPT-6 Astra
LMArena Text: entertainment and media14271376GPT-6 Astra
LMArena Vision: English12801229GPT-6 Astra
LMArena Vision: Chinese13611250GPT-6 Astra
LMArena Vision: reading text12921241GPT-6 Astra
LMArena Vision: creative writing12861217GPT-6 Astra
Neither model has a result on the other 17 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-6 Astra and Grok 4.7
BenchmarkGPT-6 AstraGrok 4.7Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

GPT-6 Astra$0.035Fits in one request
Grok 4.7$0.0050Fits in one request

Grok 4.7 costs less

Repository review

50K input + 3K output tokens

GPT-6 Astra$0.650Fits in one request
Grok 4.7$0.118Fits in one request

Grok 4.7 costs less

Agent loop

200K input + 10K output tokens

GPT-6 Astra$2.50Fits in one request
Grok 4.7$0.460Fits in one request

Grok 4.7 costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of GPT-6 Astra and Grok 4.7
SpecificationOpenAI GPT-6 AstraSpaceXAI Grok 4.7
MakerOpenAIxAI
WeightsNo public weights listedNo public weights listed
ReleasedSeptember 4, 2026September 21, 2026
Context window1.05M500K
Input $/Mtok$10.00$2.00
Output $/Mtok$50.00$6.00
Coding index85.166.7
Independent measurements behind it55
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-6 Astra better than Grok 4.7 for coding?

Pick GPT-6 Astra for coding: it scores 85.1 on the Vibe Coding Index against 66.7 for Grok 4.7. Pick Grok 4.7 for output tokens 8.3x cheaper ($6.00 vs $50.00 per million) and work measured by CyberBench (Vals AI) or SciCode, where it leads.

Which is cheaper, GPT-6 Astra or Grok 4.7?

GPT-6 Astra costs $10.00 per million input tokens and $50.00 per million output tokens; Grok 4.7 costs $2.00 and $6.00. Cost per solved task is known for neither of them.

Which has the bigger context window, GPT-6 Astra or Grok 4.7?

GPT-6 Astra, with 1.05M tokens against 500K.

How many benchmarks is the GPT-6 Astra vs Grok 4.7 comparison based on?

100 benchmarks have a result for both models as of October 22, 2026. GPT-6 Astra's coding index rests on 5 independent benchmarks and Grok 4.7's on 5. Where only one model has a result, the page says so instead of naming a winner.

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gpt-6-astra-vs-grok-4-7">LLMBenchmark.ai, GPT-6 Astra vs Grok 4.7</a></p>