Skip to main content
BenchLM
Data

GPT-6.1 Sol vs Muse Spark 1.2

Updated November 13, 2026. Rank says GPT-6.1 Sol is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

Share or export
Share on XLinkedInAPI/MCP

Decision reading

GPT-6.1 Sol has the higher public score, 84.63 versus 65.11, and the 90% score intervals do not overlap. 2 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

Model A
OpenAI logo

OpenAI

84.63/100

Supported · Public rank #5

90% interval 80.4–88.9

Model B
Meta logo

Meta

65.11/100

Supported · Public rank #29

90% interval 58.6–71.7

API price per 1M tokens

GPT-6.1 Sol: $2 input / $10 output

Muse Spark 1.2: $1.25 input / $4.25 output

Context window

GPT-6.1 Sol: 1.05M

Muse Spark 1.2: 1M

Released

GPT-6.1 Sol: September 29, 2026

Muse Spark 1.2: August 5, 2026

Shared results
2
GPT-6.1 Sol only
27
Muse Spark 1.2 only
7
Like-for-like categories
3 / 8
Supported: GPT-6.1 Sol and Muse Spark 1.2How the comparison works

Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Coding work

    Code generation, repair, and software-engineering tasks

    GPT-6.1 Sol

    GPT-6.1 Sol has the higher public coding point estimate, 73.4 to 50.1, with Supported evidence for both models. The conditional ranges do not establish rank confidence.

    Confidence: limited
  • Agentic work

    Tool use, computer use, and multi-step task completion

    GPT-6.1 Sol

    GPT-6.1 Sol has the higher public agentic point estimate, 65.7 to 57.7, with Supported evidence for both models. The conditional ranges do not establish rank confidence.

    Confidence: limited
  • Long documents

    Prompts that approach the documented context limit

    GPT-6.1 Sol

    GPT-6.1 Sol has the larger documented context window.

    Confidence: documented
Show secondary and unsupported calls
  • Chat turn cost

    1K fresh input + 500 output tokens

    Muse Spark 1.2

    Muse Spark 1.2 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    Muse Spark 1.2

    Muse Spark 1.2 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
  • Repository review cost

    50K fresh input + 3K output tokens

    Muse Spark 1.2

    Muse Spark 1.2 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

Which one for a specific job

Choose a job from the LLM Selector's task catalog to see the category row it rests on, under the same basis rules as the table below. A directional row stays directional; choosing a job never creates a winner.

The same task catalog as the LLM Selector. Each job names the evidence surface it rests on; nothing here adds a new score.

73.4GPT-6.1 Sol50.1Muse Spark 1.2

Like-for-like · BenchAlign v5.8

GPT-6.1 Sol has the higher coding point estimate. Conditional score ranges do not establish rank confidence.

Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.

Same basis rules as the category table below

Or describe your own job

The LLM Selector reads what you need a model for and returns a shortlist, ranked in the same order the job pages publish.

Describe the task and constraints. This selector recommends models; it cannot carry out the task or access your files and accounts.

We keep what you type here, drafts included, for 180 days, and after that only the job and requirements read from it. Nothing is tied to your IP address or account. Leave out names and other personal details. Privacy

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

1 category rests on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

A shared-evidence shape is not available.

BenchLM does not draw a radar or infer missing axes when the matched evidence is too sparse.

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign v5.8 lane for agentic, coding, reasoning, multimodal, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Agentic

Like-for-like
GPT-6.1 Sol
65.7
Supported · #17/135
Muse Spark 1.2
57.7
Supported · #33/135
Basis
BenchAlign v5.8 lane · 7 vs 3 public rows
Reading
GPT-6.1 Sol leads · intervals overlap

Coding

Like-for-like
GPT-6.1 Sol
73.4
Supported · #8/162
Muse Spark 1.2
50.1
Supported · #47/162
Basis
BenchAlign v5.8 lane · 6 vs 5 public rows
Reading
GPT-6.1 Sol leads

Knowledge

Like-for-like
GPT-6.1 Sol
85.6
Supported · #3/180
Muse Spark 1.2
63.1
Supported · #33/180
Basis
BenchAlign v5.8 lane · 5 vs 1 public rows
Reading
GPT-6.1 Sol leads

Reasoning

Directional only
GPT-6.1 Sol
80.4
Supported · #5/160
Muse Spark 1.2
60.3
Estimated · #31/160
Basis
BenchAlign v5.8 lane · 6 vs 0 public rows
Reading
Directional only

Multimodal

Not comparable
GPT-6.1 Sol
78.9
Supported · #4/67
Muse Spark 1.2
Not ranked
Basis
BenchAlign v5.8 lane · 3 vs 0 public rows
Reading
Not comparable

Multilingual

Not comparable
GPT-6.1 Sol
Not ranked
Muse Spark 1.2
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
GPT-6.1 Sol
Not ranked
Muse Spark 1.2
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
GPT-6.1 Sol
93.8
Unranked · 2 rankable rows
Muse Spark 1.2
Not ranked
Basis
Provisional lane · 2 vs 0 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, reasoning, multimodal, and knowledge denominators (BenchAlign v5.8) differ from the provisional-lane categories. Unranked scores sit on the provisional lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Supported evidence per lane · bars run 0–100Methodology

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

GPT-6.1 Sol
$0.007
Fits in one request
Muse Spark 1.2
$0.00338
Fits in one request

Muse Spark 1.2 has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

GPT-6.1 Sol
$0.13
Fits in one request
Muse Spark 1.2
$0.07525
Fits in one request

Muse Spark 1.2 has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

GPT-6.1 Sol
$0.16
Fits in one request
Muse Spark 1.2
$0.0975
Fits in one request

Muse Spark 1.2 has the lower modeled cost

Costs use the listed standard API rates.

Your workload

Enter a month of tokens to price it at both models’ listed API rates.

GPT-6.1 Sol
$40.00
per month
Muse Spark 1.2
$21.00
per month

Standard listed rates, no batch or volume discounts.

Cached input falls back to the list input rate only where a cached rate is unpublished

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Reasoning profile

GPT-6.1 Sol

Reasoning

Muse Spark 1.2

Reasoning

Weight access

GPT-6.1 Sol

Proprietary

Muse Spark 1.2

Proprietary

License

GPT-6.1 Sol

Proprietary

Muse Spark 1.2

Proprietary

Release date

GPT-6.1 Sol

2026-09-29

Muse Spark 1.2

2026-08-05

If you already use one of these models

Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
GPT-6.1 Sol has the higher public score, 84.63 versus 65.11, and the 90% score intervals do not overlap.
Workload cost
Repository review: $0.13 vs $0.07525. Cache-heavy agent loop: $0.16 vs $0.0975.
Context tradeoff
GPT-6.1 Sol has the larger documented window (1.05M).
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, GPT-6.1 Sol or Muse Spark 1.2?

GPT-6.1 Sol has the higher public score, 84.63 versus 65.11, and the 90% score intervals do not overlap. That is the clearest overall quality signal in the current public data.

Which is better for coding, GPT-6.1 Sol or Muse Spark 1.2?

GPT-6.1 Sol has the higher public coding point estimate, 73.4 to 50.1, with Supported evidence for both models. The conditional ranges do not establish rank confidence.

Which is better for agentic tasks, GPT-6.1 Sol or Muse Spark 1.2?

GPT-6.1 Sol has the higher public agentic tasks point estimate, 65.7 to 57.7, with Supported evidence for both models. The conditional ranges do not establish rank confidence.

Which costs less, GPT-6.1 Sol or Muse Spark 1.2?

For the stated presets, chat costs $0.007 on GPT-6.1 Sol and $0.00337 on Muse Spark 1.2; repository review costs $0.13 and $0.07525; the cache-heavy agent loop costs $0.16 and $0.0975. Costs use the listed standard API rates.

Which has the larger context window, GPT-6.1 Sol or Muse Spark 1.2?

GPT-6.1 Sol has the larger documented context window: 1.05M, compared with 1M.

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence36 rows

Agentic

  • Terminal-Bench 4.1

    GPT-6.1 Sol60.90%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • AutomationBench

    GPT-6.1 Sol36.1%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • Terminal-Bench-Science 0.1

    GPT-6.1 Sol57.0%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ExploitGym

    GPT-6.1 Sol35.1%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • MazeBench

    GPT-6.1 Sol17%
    Source
    Muse Spark 1.20%
    Source

    GPT-6.1 Sol leads this result

  • Hermes Index

    GPT-6.1 Sol57.1%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • Hermes Bench

    GPT-6.1 Sol73.9%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • Terminal-Bench 2.1

    GPT-6.1 Sol—
    Muse Spark 1.282.9%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    GPT-6.1 Sol—
    Muse Spark 1.269.7%
    Source

    Not directly comparable

Coding

  • ScarfBench

    GPT-6.1 Sol68.4%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • DeepSWE

    GPT-6.1 Sol71.9%
    Source
    Muse Spark 1.259.3%
    Source

    GPT-6.1 Sol leads this result

  • Bug Hunt Bench

    GPT-6.1 Sol44.3 fixes
    Source
    Muse Spark 1.2—

    Not directly comparable

  • FrontierCode 2.0

    GPT-6.1 Sol39.0%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • VulcanBench Frontier v4

    GPT-6.1 Sol88.8%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • PostTrainBench

    GPT-6.1 Sol38.8%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • Terminal-Bench 2.1

    GPT-6.1 Sol—
    Muse Spark 1.282.9%
    Source

    Not directly comparable

  • VulcanBench v3

    GPT-6.1 Sol—
    Muse Spark 1.287.0%
    Source

    Not directly comparable

  • FrontierSWE v2

    GPT-6.1 Sol—
    Muse Spark 1.212.0%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    GPT-6.1 Sol—
    Muse Spark 1.286.6%
    Source

    Not directly comparable

Reasoning

  • BioBasicsBench

    GPT-6.1 Sol62.6%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • STEMBench

    GPT-6.1 Sol2.76
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ARC-AGI-1

    GPT-6.1 Sol96.50%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ARC-AGI-2

    GPT-6.1 Sol94.2%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ARC-AGI-3

    GPT-6.1 Sol52.7%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ARC-AGI-3 Provider Adapter

    GPT-6.1 Sol96.18%
    Source
    Muse Spark 1.2—

    Not directly comparable

Multimodal

  • ExtractBench (LlamaIndex)

    GPT-6.1 Sol95.31%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ExtractBench Pro

    GPT-6.1 Sol12%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • ParseBench

    GPT-6.1 Sol69.63%
    Source
    Muse Spark 1.2—

    Not directly comparable

Knowledge

  • HealthBench (raw)

    GPT-6.1 Sol56.7%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • HealthBench (length-adjusted)

    GPT-6.1 Sol58.5%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • HealthBench Professional

    GPT-6.1 Sol64.2%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • HealthBench Professional (raw)

    GPT-6.1 Sol67.2%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • HealthBench Hard

    GPT-6.1 Sol36.2%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • MMLU-Pro (Vals)

    GPT-6.1 Sol—
    Muse Spark 1.288.3%
    Source

    Not directly comparable

Math

  • FrontierMath v2 (Tiers 1-3)

    GPT-6.1 Sol93.684%
    Source
    Muse Spark 1.2—

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    GPT-6.1 Sol100.000%
    Source
    Muse Spark 1.2—

    Not directly comparable

36 public results · 2 shared

Watch GPT-6.1 Sol vs Muse Spark 1.2

One weekly email when material rank, price, or benchmark evidence changes make this matchup worth revisiting.

Read a sample issue

Join 7,000+ subscribers.

Last updated November 13, 2026