BenchLeader

GPT-5.2 vs Muse Spark 1.3

Full profiles: GPT-5.2 (OpenAI) and Muse Spark 1.3 (Meta): every benchmark, price and rank.

Updated · Data from 8 sources

As of 2 Nov 2026, GPT-5.2 and Muse Spark 1.3 are neck and neck on quality (60.1 vs 61.9 on the BenchLeader Index, inside the ±5.2 margin), and Muse Spark 1.3 is 2.4× cheaper at $2.00 vs $4.81 per 1M tokens blended. Choose GPT-5.2 for coding (63 vs 61); choose Muse Spark 1.3 for fast first answers (46.3 s vs 153.5 s) and agents & tools (66 vs 55), maths (63 vs 57), and knowledge (59 vs 56), where it also streams ~2× faster.

Key facts (as of 2 Nov 2026)

  • GPT-5.2 scores 60.1 on the BenchLeader Index and Muse Spark 1.3 scores 61.9 (BenchLeader, 2 Nov 2026).
  • GPT-5.2 costs $4.81 per 1M tokens blended (list price, 2 Nov 2026).
  • Muse Spark 1.3 costs $2.00 per 1M tokens blended (list price, 2 Nov 2026).
  • Muse Spark 1.3 streams ~2× faster than GPT-5.2 (Artificial Analysis, 7-day median, 2 Nov 2026).
  • Of the 11 benchmarks both models have, Muse Spark 1.3 leads 10 (BenchLeader, 2 Nov 2026).

Which to pick for…

The pick's numbers come first. Category scores on the BenchLeader scale (50 is the average model, 15 points one standard deviation). High confidence means a lead of half a standard deviation or more; under one point is called either.

Use casePickWhyConfidence
CodingGPT-5.263 vs 61 category score; Vibe Code Bench v1.1 53.5% vs 85.9%Medium
Agents & tool useMuse Spark 1.366 vs 55 category scoreHigh
MathsMuse Spark 1.363 vs 57 category score; FrontierMath Tiers 1–3 74.0% vs 67.4%Medium
ReasoningEither61 vs 61 category score; GPQA Diamond (AA) 90.3% vs 93.5%Either
KnowledgeMuse Spark 1.359 vs 56 category scoreMedium
Long documentsEither66 vs 66 category score; AA-LCR v1.1 82.7% vs 83.0%Either
Chat quality (human preference)–Only Muse Spark 1.3 has an Arena rating (69 category score)Not comparable
Lowest costMuse Spark 1.3$2.00 vs $4.81 per 1M blended; agentic coding session $0.092 vs $0.161–
Fastest first answerMuse Spark 1.346.3 s (Muse Spark 1.3 (max)) vs 153.5 s (GPT-5.2 (xhigh)) to the first answer token–
High volume on a budgetNeither flagshipA smaller model is usually the better fit: Cheapest good LLMs, Fastest LLMs–

Key differences

  • GPT-5.2 (xhigh) and Muse Spark 1.3 (max) are neck and neck on quality (60.1 vs 61.9, within the ±5.2 margin).
  • GPT-5.2 (xhigh) is stronger in coding, instruction following, reasoning.
  • Muse Spark 1.3 (max) is stronger in agents & tools, knowledge, long context, maths, human preference, multimodal.
  • Muse Spark 1.3 (max) is 2.4× cheaper ($2.00 vs $4.81 per 1M blended).
  • Muse Spark 1.3 (max) streams 2.4× faster (194 vs 80 tokens per second).

At a glance

SpecGPT-5.2Muse Spark 1.3
DeveloperOpenAIMeta
Released11 Dec 20252 Sep 2026
Context window (tokens)400,0001,048,576
Compared atGPT-5.2 (xhigh)Muse Spark 1.3 (max)
Open weightsNoNo
Price in / out / cached input per 1M$1.75 / $14.00 / $0.175$1.25 / $4.25 / $0.150

Category by category

Category scores on the BenchLeader scale: 50 is the average evaluated model, 15 points is one standard deviation. A gap under one point is called level.

CategoryGPT-5.2 (xhigh)Muse Spark 1.3 (max)Leader
Reasoning60.960.6level
Coding62.960.8GPT-5.2
Agents & tools54.765.5Muse Spark 1.3
Maths56.863.1Muse Spark 1.3
Knowledge56.058.5Muse Spark 1.3
Instruction following73.6–not comparable
Human preference–68.8not comparable
Multimodal–65.7not comparable
Long context66.266.4level

On one chart

Each domain on the index's own scale, where 50 is an average model. Click a domain to see the benchmarks behind it. Pick up to 5 models from the list.

2550 avg75ReasoningCodingAgents & toolsMathsKnowledgeLong contextGPT-5.2, Reasoning: 60.9GPT-5.2, Coding: 62.9GPT-5.2, Agents & tools: 54.7GPT-5.2, Maths: 56.8GPT-5.2, Knowledge: 56.0GPT-5.2, Long context: 66.2Muse Spark 1.3, Reasoning: 60.6Muse Spark 1.3, Coding: 60.8Muse Spark 1.3, Agents & tools: 65.5Muse Spark 1.3, Maths: 63.1Muse Spark 1.3, Knowledge: 58.5Muse Spark 1.3, Long context: 66.4

Not drawn, measured for fewer than two of these models: Instruction following, Multimodal, Human preference.

ModelIndex

Where sources disagree

Across the 11 benchmarks both have, GPT-5.2 leads 1, Muse Spark 1.3 leads 10. Every overall index that rates both puts Muse Spark 1.3 ahead.

Overall indexGPT-5.2 (xhigh)Muse Spark 1.3 (max)Leader
BenchLeader Index60.161.9neck and neck
Arena Text1437†1495Muse Spark 1.3

Each publisher runs its own tasks, harnesses and effort settings, so their overall verdicts can differ; BenchLeader reconciles them on one scale. † measured at another effort setting of the same model (the publisher did not test the one compared here).

Price, speed and latency

List prices blended at three input tokens per output token. Per-task prices use the token counts on the methodology page. Cost, tokens and time per benchmark task are measured: Artificial Analysis’ averages over its whole Intelligence Index run.

MeasureGPT-5.2 (xhigh)Muse Spark 1.3 (max)
Blended price per 1M tokens$4.81$2.00
Input / output per 1M$1.75 / $14.00$1.25 / $4.25
Cached input per 1M$0.175$0.150
Price per task: chat reply$0.0049$0.0018
Price per task: summarize a 30-page report$0.029$0.018
Price per task: code edit$0.032$0.014
Price per task: agentic coding session$0.161$0.092
Price per task: structured extraction$0.0063$0.0034
Agentic coding session, input mostly cached$0.090$0.043
Cost per benchmark task (AA Index)–$2.39
Output tokens per task (AA Index)–91k
Of which reasoning–55k
Time per task (AA Index)–8 min
Output speed80 tok/s194 tok/s
Time to first answer153.5 s46.3 s
Time to a complete answer159.7 s48.9 s

Each model is compared at its best-ranked reasoning-effort setting. GPT-5.2 (xhigh) scores 60.1 and takes 154 s to its first answer token; GPT-5.2 scores 57.9 in 2 s, GPT-5.2 (medium) scores 56.2 in 2 s. Muse Spark 1.3 (max) scores 61.9 and takes 46 s to its first answer token; Muse Spark 1.3 (xhigh) scores 58.5 in 22 s, Muse Spark 1.3 scores 57.8 in 2 s. Higher effort means more thinking before the answer: better scores, longer waits and more tokens billed. How reasoning effort changes scores and cost.

Every benchmark

159 benchmarks, grouped by category; each name links to the board and its leaders. † measured at another effort setting of the same model, shown for reference and not counted as a win.

MetricPublisherGPT-5.2 (xhigh)Muse Spark 1.3 (max)
BenchLeader IndexBenchLeader60.161.9
Agents & tools scoreBenchLeader54.765.5
Coding scoreBenchLeader62.960.8
Instruction following scoreBenchLeader73.6–
Knowledge scoreBenchLeader56.058.5
Long context scoreBenchLeader66.266.4
Maths scoreBenchLeader56.863.1
Reasoning scoreBenchLeader60.960.6
Human preference scoreBenchLeader–68.8
Multimodal scoreBenchLeader–65.7
Blended price $/MBenchLeader$4.81$2.00
Output speedBenchLeader80 tok/s194 tok/s
Time to first answerBenchLeader153.5 s46.3 s
Context windowBenchLeader400,000 tokens1,048,576 tokens
Reasoning
GPQA DiamondEpoch AI Benchmarking Hub91.4%–
Humanity's Last ExamScale AI / CAIS27.8%†–
SimpleBenchSimpleBench45.8%†–
Arena Hard PromptsArena (LMArena)1497†1516
LiveBench 2.0 ReasoningLiveBench–89.7%†
LiveBench 1.0 ReasoningLiveBench83.2%†89.7%†
GPQA Diamond (AA)Artificial Analysis90.3%93.5%
Humanity's Last Exam (AA)Artificial Analysis37.7%48.7%
HLE-Diamond (AA)Artificial Analysis–33.7%
GPQA Diamond (Vals)Vals AI91.7%–
Kagi LLM BenchmarkKagi LLM Benchmark73.3%†–
ARC-AGI-1ARC Prize86.2%–
ARC-AGI-2ARC Prize52.9%–
CritPtArtificial Analysis11.6%24.9%
CritPt v2 hard subset (AA)Artificial Analysis–46.0%
MysteryMechanismVals AI–36.0%
SciPredictScale AI SEAL20.6%†–
Chess PuzzlesEpoch AI Benchmarking Hub48.0%37.0%
Mystery Game PuzzlesEpoch AI Benchmarking Hub22.0%†25.0%
CL-benchEpoch AI Benchmarking Hub18.2%†–
LMCAEpoch AI Benchmarking Hub43.9%53.9%†
DTBenchEpoch AI Benchmarking Hub90.9%96.5%†
ForecastBenchForecastBench64.2%†–
BTF-3Epoch AI Benchmarking Hub–14.1%†
Coding
SWE-bench Verified (Epoch)Epoch AI Benchmarking Hub73.8%†–
Show all 159 benchmarks
MetricPublisherGPT-5.2 (xhigh)Muse Spark 1.3 (max)
Coding
SciCodeSciCode–58.8%
WeirdMLWeirdML72.2%–
GSO-BenchGSO-Bench27.4%†–
Arena CodingArena (LMArena)1515†1534
Arena WebDevArena (LMArena)1416†1656
LiveBench 2.0 CodingLiveBench–90.2%†
LiveBench 1.0 CodingLiveBench76.1%†81.1%†
LiveCodeBenchVals AI85.4%–
IOIVals AI–56.6%
SWE-bench (Vals)Vals AI75.8%–
SWE-Bench ProScale AI SEAL29.9%†–
SWE-bench Verified (bash only)SWE-bench69.0%†–
SWE-bench Verified (any scaffold)SWE-bench72.8%†–
Code MigrationVals AI–47.4%
ProgramBenchVals AI–2.5%
SWE-bench MultimodalVals AI–43.1%
Vibe Code Bench 1-100Vals AI–20.5%
Vibe Code Bench v1.1Vals AI53.5%85.9%
SWE-Bench Pro (private)Scale AI SEAL29.9%†–
CursorBenchCursor–41.6%
ALE-BenchEpoch AI Benchmarking Hub1249.8†1688.3†
AlgoTuneAlgoTune2.0†–
FrontierSWEEpoch AI Benchmarking Hub–25.8%
Terminal-Bench 4.0 (AA)Artificial Analysis–33.3%
Terminal-Bench 2.1 (AA)Artificial Analysis–84.3%
Startrise FrontendStartrise–74.7%†
GameBench 2 OverallDuelLab GameBench 2–59.7†
GameBench 2 by reasoning settingDuelLab GameBench 2–70.9†
FrontierCode 1.1 (AA)Artificial Analysis–40.6%
FrontierCode 2.0 (AA)Artificial Analysis–23.1%
LiveCodeBench (AA)Artificial Analysis88.9%–
Agents & tools
Terminal-BenchTerminal-Bench64.9%†14.6%†
GDPvalOpenAI49.7%†–
Remote Labor IndexScale AI / CAIS2.1%†–
APEX-AgentsMercor–47.6%
Arena AgentArena (LMArena)–2.6
LiveBench Long AgenticLiveBench–25.5%†
LiveBench BrowserLiveBench–30.9%†
LiveBench Agentic CodingLiveBench50.3%†64.1%†
Terminal-Bench HardArtificial Analysis47.0%–
τ²-Bench Telecom (AA)Artificial Analysis84.8%–
Terminal-Bench 2.1 (Vals)Vals AI–79.0%
MCP AtlasScale AI SEAL67.6%–
HiL-BenchScale AI SEAL–66.9%†
BFCL OverallBerkeley Function Calling Leaderboard55.9%†–
τ²-benchτ²-bench84.8%†–
τ³-bench Bankingτ²-bench32.2%†–
τ³-Banking (AA)Artificial Analysis11.1%†50.5%
ITBench SRE (AA)Artificial Analysis–33.2%
Analyst Agent (AA)Artificial Analysis–37.5%
CUA-benchVals AI–5.8%
CyberBenchVals AI–72.7%
Finance Agent v2Vals AI–60.0%
Harvey's Legal Agent Benchmark v1Vals AI–23.8%
Legal Research BenchVals AI–55.3%
Poker AgentVals AI1131.8%†–
SREBenchVals AI–3.8%
Tax Agent BenchVals AI–42.4%
Terminal-Bench 2.0 (Vals)Vals AI51.7%†–
Terminal-Bench 4.0 (Vals)Vals AI–24.8%
Terminal-Bench ScienceVals AI–10.0%
DeepResearch BenchDeepResearch Bench41.1%†–
METR Time HorizonsMETR75.3%†–
Vending-Bench 2Andon Labs3591.3†–
AutomationBenchArtificial Analysis–57.9%
GDP.pdf (AA)Artificial Analysis–26.6%
Harvey LAB-AA v1.1Harvey–8.9%
AA-Briefcase v1.1Artificial Analysis–1581
Terminal-Bench-Science 0.1 (AA)Artificial Analysis–10.9%
Maths
FrontierMath Tiers 1–3Epoch AI Benchmarking Hub67.4%74.0%
FrontierMath Tier 4Epoch AI Benchmarking Hub31.7%46.3%
OTIS Mock AIMEEpoch AI Benchmarking Hub96.1%99.2%†
ProofBenchVals AI15.0%58.0%
LiveBench MathematicsLiveBench93.2%†96.0%†
AIME (Vals)Vals AI96.9%–
MGSMVals AI94.0%–
AIME 2026MathArena98.3%†–
HMMT February 2026MathArena97.0%†–
MathArena ApexMathArena13.5%†–
Arena MathsArena (LMArena)1454†1508
Knowledge
SimpleQA VerifiedEpoch AI Benchmarking Hub37.1%–
LiveBench 2.0 Data AnalysisLiveBench–79.6%†
LiveBench ResearchLiveBench–68.6%†
LiveBench 1.0 Data AnalysisLiveBench78.2%†79.6%†
AA-Omniscience v1.1Artificial Analysis–22.4
MMLU-ProVals AI86.2%–
LegalBenchVals AI82.8%–
CorpFinVals AI65.9%–
TaxEvalVals AI75.8%–
MedQAVals AI94.1%–
PRBench FinanceScale AI SEAL–59.5%†
PRBench LegalScale AI SEAL–61.6%†
MultiNRCScale AI SEAL42.2%†–
CaseLaw v2Vals AI66.0%–
Excel Modeling BenchmarkVals AI–67.4%
MedCodeVals AI49.8%–
MedScribeVals AI84.4%–
DrugDiscoveryBenchScale AI SEAL29.3%62.2%†
EBR-benchEpoch AI Benchmarking Hub23.0%–
GDP.pdfEpoch AI Benchmarking Hub–27.6%†
AA-Omniscience v1.1: accuracyArtificial Analysis–38.0%
AA-Omniscience v1.1: non-hallucinationArtificial Analysis–74.8%
Global-MMLU-Lite (AA)Artificial Analysis89.8%†–
Instruction following
LiveBench LanguageLiveBench79.8%†82.8%†
LiveBench Instruction FollowingLiveBench61.8%†78.0%†
IFBenchArtificial Analysis75.4%–
TutorBenchScale AI SEAL53.5%†–
Arena Instruction FollowingArena (LMArena)1457†1483
Human preference
Arena TextArena (LMArena)1476†1495
Arena Creative WritingArena (LMArena)1433†1464
Arena Multi-turnArena (LMArena)1494†1493
Arena Longer QueriesArena (LMArena)1472†1496
Multimodal
Arena VisionArena (LMArena)1268†1308
LiveBench DesignLiveBench–74.8%†
MMMU-ProArtificial Analysis74.6%†82.0%†
VISTAScale AI SEAL46.6%†–
MMMU-Pro (Vals)Vals AI86.7%–
MortgageTaxVals AI67.1%–
VPCTEpoch AI Benchmarking Hub84.0%–
Code2Video-AAArtificial Analysis–1019
AA-3DArtificial Analysis–1033
Long context
AA-LCR v1.1Artificial Analysis82.7%83.0%
Arena DocumentArena (LMArena)1425†1468
MLCRArtificial Analysis–13.9%
Composite
Epoch Capabilities IndexEpoch AI Benchmarking Hub153.8†157.4†
LiveBench 2.0LiveBench–63.0%†
LiveBench 1.0LiveBench74.6%†81.6%†
AA Intelligence Index v5.0Artificial Analysis–36.4
AA Intelligence Index v4.3.2Artificial Analysis30.448.1
AA Progress Index v1Artificial Analysis295.5324.5
Vals RSI IndexVals AI15.8%19.6%
Safety & honesty
FORTRESSScale AI SEAL17.5%†–
MASKScale AI SEAL86.7%†–
PropensityBenchScale AI SEAL34.4%†–

Data as of 2026-11-02. Best configuration of each model; every score links to its source on the model pages.

DuelLab GameBench 2, release gb2-20261026-cb69502a12d9 (https://benchmarks.duellab.org/releases/gb2-20261026-cb69502a12d9/), CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Scores mapped to BenchLeader model names; not endorsed by DuelLab.

What changed

  • Muse Spark 1.3 (max): 1 score revision.
  • Muse Spark 1.3 (max): BenchLeader Index 64.5 → 61.8.
  • GPT-5.2 (xhigh): 1 new result (AA Progress Index v1).
  • Muse Spark 1.3 (max): 5 new results (AA Intelligence Index v5.0, AA Progress Index v1, HLE-Diamond (AA)…); 3 score revisions; cost per task moved from $1.31/M to $2.39/M (81% up).
  • Muse Spark 1.3 (max): cost per task moved from $3.69/M to $1.31/M (64% down).
  • Muse Spark 1.3 (max): cost per task moved from $1.60/M to $3.69/M (130% up).
  • GPT-5.2 (xhigh): 1 new result (Vals RSI Index).
  • Muse Spark 1.3 (max): 3 new results (Harvey's Legal Agent Benchmark v1, Vals RSI Index, SWE-bench Multimodal); 1 score revision.
  • Muse Spark 1.3 (max): 1 score revision.
  • Muse Spark 1.3 (max): 1 score revision.

Rankings: Best LLM overall · Best LLM for agents · Best cheap LLMs

GPT-5.2 vs Muse Spark 1.3: questions

Is GPT-5.2 better than Muse Spark 1.3?
GPT-5.2 (xhigh) and Muse Spark 1.3 (max) are neck and neck on quality (60.1 vs 61.9, within the ±5.2 margin). The BenchLeader Index combines every independent quality benchmark; the two are within the margin of error as of 2 Nov 2026, so check the category scores for your use.
GPT-5.2 vs Muse Spark 1.3: which is cheaper, and will that change?
Muse Spark 1.3 is cheaper today: $2.00 against $4.81 per million tokens, blended at three input tokens per output token. No price change has been announced for either.
Is GPT-5.2 or Muse Spark 1.3 better for coding?
GPT-5.2 scores higher in coding (63 vs 61 on the category index, where 50 is average).
Which is faster, GPT-5.2 or Muse Spark 1.3?
Muse Spark 1.3 streams ~2× faster (194 vs 80 output tokens per second, Artificial Analysis 7-day median).
Is GPT-5.2 or Muse Spark 1.3 better for agents and tool use?
Muse Spark 1.3 scores higher in agentic tasks (66 vs 55 on the category index, where 50 is average).
More questions (4)
Which is better for long documents?
They are level on long-context benchmarks (66 vs 66). Muse Spark 1.3 accepts more context: 1,048,576 against 400,000 tokens for GPT-5.2.
Which has lower latency?
Muse Spark 1.3 answers first: 46.3 s against 153.5 s to the first answer token, as Artificial Analysis measures it. Reasoning effort drives most of this: a higher setting thinks longer before it answers.
Do independent benchmarks agree on GPT-5.2 vs Muse Spark 1.3?
Across the 11 benchmarks both have, GPT-5.2 leads 1, Muse Spark 1.3 leads 10. Every overall index that rates both puts Muse Spark 1.3 ahead.
When was Muse Spark 1.3 released?
Muse Spark 1.3 was released on 2 Sep 2026.