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GPT-6 Astra vs Inkling

GPT-6 Astra leads Inkling on coding, 85.1 to 31.5 on the Vibe Coding Index, and Inkling costs 12.3x less per output token ($4.05 vs $50.00 per million). Updated October 22, 2026; 89 benchmarks have a result for both.

Replace GPT-6 Astra Replace Inkling
GPT-6 AstraOpenAI
Coding
85.1
Overall
83.0
Output $/M
$50.00
78
T InklingThinking Machines
Coding
31.5
Overall
46.5
Output $/M
$4.05
11
vs boards won of 89 shared

GPT-6 Astra or Inkling: which to pick

Pick GPT-6 Astra for coding: it scores 85.1 on the Vibe Coding Index against 31.5 for Inkling, though on 5 benchmarks against 6.

Pick Inkling for output tokens 12.3x cheaper ($4.05 vs $50.00 per million) and work measured by CyberBench (Vals AI) or LMArena Text: math, where it leads.

Model AGPT-6 AstraOpenAI85.1/1005 independent benchmarksNo cost per solved taskModel BInklingThinking Machines31.5/1006 independent benchmarks$0.76 per solved task
Shared results
89
GPT-6 Astra only
32
Inkling only
13
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, Inkling 31.5 from 6 benchmarks.
Widest category
Math, 44.9 points apart on average over 6 shared benchmarks.
Widest single gap
ProofBench: GPT-6 Astra 99.0% against Inkling 0.0%, 99.0 points apart on a 0 to 100 scale.
Output price
GPT-6 Astra $50.00 against Inkling $4.05 per million output tokens, 12.3x apart.
Context window
GPT-6 Astra takes 1.05M tokens, Inkling 524K.

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 AstraBarsInklingTies
Coding191
Intelligence20
Agentic work120
Reasoning100
Math51
Knowledge42
Web design90
General177
All shared boards7811
CodingLike-for-likeSix of these boards feed the Vibe Coding Index191
Coding benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
LiveBench coding93.7%64.0%GPT-6 Astra
LMArena WebDev17741414GPT-6 Astra
AA Coding Index76.952.1GPT-6 Astra
LiveCodeBench (Vals AI)Not measured85.5%Only Inkling measured
SWE-bench Verified (Vals AI)Not measured77.6%Only Inkling measured
Terminal-Bench 4 (Vals AI)59.6%0.5%GPT-6 Astra
Vibe Code Bench (Vals AI)89.6%19.2%GPT-6 Astra
Code migration (Vals AI)67.7%11.8%GPT-6 Astra
ProgramBench (Vals AI)5.5%0.0%GPT-6 Astra
IOI (Vals AI)100.0%14.9%GPT-6 Astra
Terminal-Bench 2.1 (Vals AI)87.3%47.6%GPT-6 Astra
SWE-bench Multimodal (Vals AI)43.3%Not measuredOnly GPT-6 Astra measured
Vibe Code Bench 1-100 (Vals AI)27.6%7.3%GPT-6 Astra
SkillsBench (Vals AI)Not measured26.1%Only Inkling measured
CyberBench (Vals AI)41.1%66.8%Inkling
SciCode56.5%47.0%GPT-6 Astra
FrontierCode53.3%14.0%GPT-6 Astra
FrontierSWE65.5%4.1%GPT-6 Astra
GSO-Bench79.4%Not measuredOnly GPT-6 Astra measured
WeirdML93.3%32.3%GPT-6 Astra
MirrorCode46.7%Not measuredOnly GPT-6 Astra measured
ALE-Bench2951.3946.0GPT-6 Astra
LMArena Text: coding14891466GPT-6 Astra
LMArena Text: software and IT14741465GPT-6 Astra
LMArena WebDev: React17981404GPT-6 Astra
LMArena WebDev: HTML17751399GPT-6 Astra
LMArena WebDev: from an image1726Not measuredOnly GPT-6 Astra measured
SciCode12.3%Not measuredOnly GPT-6 Astra measured
Neither model has a result on the other 11 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
AA Intelligence Index52.725.0GPT-6 Astra
Epoch Capabilities Index168.8148.4GPT-6 Astra
Agentic workLike-for-likePublic boards, shown as published, kept out of the index120
Agentic work benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
AA Agentic Index51.022.5GPT-6 Astra
Design Arena: agents building web apps13731196GPT-6 Astra
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 slides1219Not measuredOnly GPT-6 Astra measured
Design Arena: spreadsheets1365Not measuredOnly GPT-6 Astra measured
LiveBench research85.2%59.9%GPT-6 Astra
LiveBench browser84.0%16.0%GPT-6 Astra
LiveBench long agentic82.4%14.1%GPT-6 Astra
SREBench (Vals AI)56.9%0.0%GPT-6 Astra
Finance Agent (Vals AI)53.5%46.6%GPT-6 Astra
Tax Agent Bench (Vals AI)20.7%15.3%GPT-6 Astra
Legal Research Bench (Vals AI)39.4%28.4%GPT-6 Astra
Harvey's Legal Agent Benchmark (Vals AI)7.1%3.8%GPT-6 Astra
Excel Modeling Benchmark (Vals AI)71.7%38.4%GPT-6 Astra
BioMysteryBench (Vals AI)79.3%Not measuredOnly GPT-6 Astra measured
Terminal-Bench-Science (Vals AI)62.9%Not measuredOnly GPT-6 Astra measured
Vals Science Index65.1%Not measuredOnly GPT-6 Astra measured
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%Not measuredOnly GPT-6 Astra measured
APEX-Agents64.7%33.8%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$15,515Not measuredOnly GPT-6 Astra measured
Neither model has a result on the other 14 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index100
Reasoning benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
GPQA DiamondNot measured87.1%Only Inkling measured
LiveBench reasoning92.7%78.3%GPT-6 Astra
MysteryMechanism (Vals AI)53.1%Not measuredOnly GPT-6 Astra measured
MMMU Pro (Vals AI)Not measured78.5%Only Inkling measured
GPQA Diamond (Artificial Analysis run)96.3%87.2%GPT-6 Astra
Humanity's Last Exam (Artificial Analysis run)54.7%31.9%GPT-6 Astra
GPQA Diamond (Epoch AI run)95.8%88.3%GPT-6 Astra
ARC-AGI98.5%79.5%GPT-6 Astra
ARC-AGI-295.0%36.5%GPT-6 Astra
SimpleBenchNot measured50.0%Only Inkling measured
Chess puzzles74.0%21.0%GPT-6 Astra
Mystery game puzzles84.0%Not measuredOnly GPT-6 Astra measured
EBR-bench76.2%Not measuredOnly GPT-6 Astra measured
LMArena Text: hard prompts14631451GPT-6 Astra
LMArena Text: expert14891466GPT-6 Astra
LMArena Text: hard prompts in English14641448GPT-6 Astra
LMArena Vision: diagrams1297Not measuredOnly GPT-6 Astra measured
LMArena Vision: homework1337Not measuredOnly GPT-6 Astra measured
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index51
Math benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
OTIS Mock AIME100.0%88.9%GPT-6 Astra
FrontierMath, tiers 1 to 393.7%33.3%GPT-6 Astra
FrontierMath, tier 497.6%4.9%GPT-6 Astra
ProofBench99.0%0.0%GPT-6 Astra
LMArena Text: math14651479Inkling
LMArena Text: mathematical work14841460GPT-6 Astra
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index42
Knowledge benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
MMLU ProNot measured86.3%Only Inkling measured
LegalBench (Vals AI)Not measured83.0%Only Inkling measured
CorpFin (Vals AI)Not measured68.6%Only Inkling measured
TaxEval (Vals AI)Not measured75.3%Only Inkling measured
MortgageTax (Vals AI)Not measured64.0%Only Inkling measured
MedCode (Vals AI)48.5%41.2%GPT-6 Astra
SimpleQA Verified75.6%40.3%GPT-6 Astra
LMArena Text: science14511455Inkling
LMArena Text: medicine and healthcare14251447Inkling
LMArena Text: legal and government14621448GPT-6 Astra
LMArena Text: business and finance14391438GPT-6 Astra
FACTS Benchmark Suite75.7%Not measuredOnly GPT-6 Astra measured
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index90
Web design benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
Design Arena: websites13361224GPT-6 Astra
Design Arena: UI components13931198GPT-6 Astra
Design Arena: game dev14781165GPT-6 Astra
Design Arena: data viz13351156GPT-6 Astra
Design Arena: 3D15001160GPT-6 Astra
Design Arena: all code categories13791205GPT-6 Astra
Design Arena: SVG14311108GPT-6 Astra
Design Arena: ASCII art13531089GPT-6 Astra
LiveBench design82.0%58.3%GPT-6 Astra
GeneralLike-for-likePublic boards, shown as published, kept out of the index177
General benchmarks for GPT-6 Astra and Inkling
BenchmarkGPT-6 AstraInklingLeader
Vals Index65.0%29.0%GPT-6 Astra
LiveBench data analysis83.0%72.8%GPT-6 Astra
Public Benefits Bench (Vals AI)Not measured58.5%Only Inkling measured
SAGE (Vals AI)46.4%36.5%GPT-6 Astra
MedScribe (Vals AI)87.9%85.4%GPT-6 Astra
Vals Multimodal IndexNot measured49.4%Only Inkling measured
Long context reasoning (AA-LCR)80.7%77.3%GPT-6 Astra
DTBench97.3%87.5%GPT-6 Astra
LMCA64.4%37.6%GPT-6 Astra
Furniture assembly80.0%Not measuredOnly GPT-6 Astra measured
LMArena Text14411442Inkling
LMArena Text: instruction following14551425GPT-6 Astra
LMArena Text: creative writing14201390GPT-6 Astra
LMArena Vision1280Not measuredOnly GPT-6 Astra measured
LMArena Text: English14471442GPT-6 Astra
LMArena Text: non-English14321434Inkling
LMArena Text: Chinese14891493Inkling
LMArena Text: German14591445GPT-6 Astra
LMArena Text: Japanese14051429Inkling
LMArena Text: Korean14281403GPT-6 Astra
LMArena Text: French14321455Inkling
LMArena Text: Spanish14221449Inkling
LMArena Text: Russian14381430GPT-6 Astra
LMArena Text: Polish14221450Inkling
LMArena Text: multi-turn14471437GPT-6 Astra
LMArena Text: longer queries14601435GPT-6 Astra
LMArena Text: writing and language14371404GPT-6 Astra
LMArena Text: entertainment and media14271394GPT-6 Astra
LMArena Vision: English1280Not measuredOnly GPT-6 Astra measured
LMArena Vision: Chinese1361Not measuredOnly GPT-6 Astra measured
LMArena Vision: reading text1292Not measuredOnly GPT-6 Astra measured
LMArena Vision: creative writing1286Not measuredOnly GPT-6 Astra measured
Neither model has a result on the other 14 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 Inkling
BenchmarkGPT-6 AstraInklingLeader
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
Inkling$0.0030Fits in one request

Inkling costs less

Repository review

50K input + 3K output tokens

GPT-6 Astra$0.650Fits in one request
Inkling$0.061Fits in one request

Inkling costs less

Agent loop

200K input + 10K output tokens

GPT-6 Astra$2.50Fits in one request
Inkling$0.235Fits in one request

Inkling 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 Inkling
SpecificationOpenAI GPT-6 AstraThinking Machines Inkling
MakerOpenAIThinking Machines
WeightsNo public weights listedOpen weights
ReleasedSeptember 4, 2026July 17, 2026
Context window1.05M524K
Input $/Mtok$10.00$0.975
Output $/Mtok$50.00$4.05
Coding index85.131.5
Independent measurements behind it56
Cost per solved taskNot computable$0.76
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-6 Astra better than Inkling for coding?

Pick GPT-6 Astra for coding: it scores 85.1 on the Vibe Coding Index against 31.5 for Inkling, though on 5 benchmarks against 6. Pick Inkling for output tokens 12.3x cheaper ($4.05 vs $50.00 per million) and work measured by CyberBench (Vals AI) or LMArena Text: math, where it leads.

Which is cheaper, GPT-6 Astra or Inkling?

GPT-6 Astra costs $10.00 per million input tokens and $50.00 per million output tokens; Inkling costs $0.975 and $4.05. Cost per solved task is known for Inkling only.

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

GPT-6 Astra, with 1.05M tokens against 524K.

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

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

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<iframe src="https://llmbenchmark.ai/embed/compare/gpt-6-astra-vs-thinkingmachines-inkling" title="GPT-6 Astra vs Inkling, LLMBenchmark.ai" width="100%" height="360" style="border:0;max-width:100%" loading="lazy"></iframe>
<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gpt-6-astra-vs-thinkingmachines-inkling">LLMBenchmark.ai, GPT-6 Astra vs Inkling</a></p>