Agentic
Like-for-like- Kimi K2.6
- 46.7
- Supported · #78/154
- Muse Spark 1.2
- 61.0
- Supported · #16/154
- Basis
- BenchAlign lane · 12 vs 2 public rows
- Reading
- Muse Spark 1.2 leads · intervals overlap
Kimi K2.6 vs Muse Spark 1.2
Decision reading
Muse Spark 1.2 has the higher public score estimate, 70.28 versus 65.5, but the 90% score intervals overlap. Treat that as a lead, not a settled winner.
3 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
Updated September 18, 2026. Rank says Muse Spark 1.2 is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.
Both of these models will change. Get the price, version and retirement notices for the pair, each with its source. Follow model changes
Share or export
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
Muse Spark 1.2
Muse Spark 1.2 leads on the public coding lane, 60 to 50.7, with Supported evidence for both models, although the 90% intervals overlap.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Muse Spark 1.2
Muse Spark 1.2 leads on the public agentic lane, 61 to 46.7, with Supported evidence for both models, although the 90% intervals overlap.
Confidence: limited
Long documents
Prompts that approach the documented context limit
Muse Spark 1.2
Muse Spark 1.2 has the larger documented context window.
Confidence: documented
Show secondary and unsupported calls
Chat turn cost
1K fresh input + 500 output tokens
Kimi K2.6
Kimi K2.6 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. Kimi K2.6 has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
Repository review cost
50K fresh input + 3K output tokens
Kimi K2.6
Kimi K2.6 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.
50.7Kimi K2.660.0Muse Spark 1.2
Like-for-like · BenchAlign
Muse Spark 1.2 leads the like-for-like coding row, although the 90% intervals overlap.
Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
34 Kimi K2.6 only
3 Shared
5 Muse Spark 1.2 only
- Shared results
- 3
- Kimi K2.6 only
- 34
- Muse Spark 1.2 only
- 5
- Like-for-like categories
- 2 / 8
1 category rests on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.
Category results, on a stated basis
Each row shows the public-lane category score for both models: the BenchAlign lane for agentic, coding, 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.
Coding
Like-for-like- Kimi K2.6
- 50.7
- Supported · #58/154
- Muse Spark 1.2
- 60.0
- Supported · #21/154
- Basis
- BenchAlign lane · 10 vs 5 public rows
- Reading
- Muse Spark 1.2 leads · intervals overlap
Knowledge
Directional only- Kimi K2.6
- 61.3
- Supported · #32/184
- Muse Spark 1.2
- 70.7
- Estimated · #10/184
- Basis
- BenchAlign lane · 5 vs 1 public rows
- Reading
- Directional only
Reasoning
Not comparable- Kimi K2.6
- Not ranked
- Muse Spark 1.2
- 75.3
- Unranked · 2 rankable rows
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- Kimi K2.6
- 71.0
- #1/7
- Muse Spark 1.2
- Not ranked
- Basis
- Provisional lane · 4 vs 0 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- Kimi K2.6
- Not ranked
- Muse Spark 1.2
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Kimi K2.6
- 63.9
- #26/48
- Muse Spark 1.2
- Not ranked
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- Kimi K2.6
- Not ranked
- Muse Spark 1.2
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
| Category | Kimi K2.6 | Muse Spark 1.2 | Basis | Reading |
|---|---|---|---|---|
| Agentic | 46.7Supported · #78/154 | 61.0Supported · #16/154 | Like-for-likeBenchAlign lane · 12 vs 2 public rows | Muse Spark 1.2 leads · intervals overlap |
| Coding | 50.7Supported · #58/154 | 60.0Supported · #21/154 | Like-for-likeBenchAlign lane · 10 vs 5 public rows | Muse Spark 1.2 leads · intervals overlap |
| Knowledge | 61.3Supported · #32/184 | 70.7Estimated · #10/184 | Directional onlyBenchAlign lane · 5 vs 1 public rows | Directional only |
| Reasoning | Not ranked | 75.3Unranked · 2 rankable rows | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Math | 71.0#1/7 | Not ranked | Not comparableProvisional lane · 4 vs 0 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multimodal | 63.9#26/48 | Not ranked | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Instruction following | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.
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.
Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.
MMLU-Pro (Vals)
Knowledge
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
- Kimi K2.6
- $0.00295
- Fits in one request
- Muse Spark 1.2
- $0.00338
- Fits in one request
Kimi K2.6 has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- Kimi K2.6
- $0.0595
- Fits in one request
- Muse Spark 1.2
- $0.07525
- Fits in one request
Kimi K2.6 has the lower modeled cost
Costs use the listed standard API rates.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- Kimi K2.6
- $0.249
- Fits in one request
- Cached input priced at the published list-input rate
- Muse Spark 1.2
- $0.0975
- Fits in one request
Muse Spark 1.2 has the lower modeled cost
Kimi K2.6 has no published cached-input rate, so cached tokens use its listed input rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationKimi K2.6Muse Spark 1.2
Context window
Maximum documented context; output-token limits may be lower.
Kimi K2.6
256K
Muse Spark 1.2
API model ID
Kimi K2.6
Not sourced
Muse Spark 1.2
muse-spark-1.2
Meta: Muse Spark 1.2 model pageCached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Kimi K2.6
Not published
Muse Spark 1.2
$0.15 per 1M cached input tokens
Meta: Muse Spark 1.2 model pageDocumented inputs
Kimi K2.6
Not sourced
Muse Spark 1.2
Not sourced
Documented outputs
Kimi K2.6
Not sourced
Muse Spark 1.2
Not sourced
Provider availability
Kimi K2.6
Not sourced
Muse Spark 1.2
Not sourced
Reasoning profile
Kimi K2.6
Reasoning
Muse Spark 1.2
Reasoning
Weight access
Kimi K2.6
Open Weight
Muse Spark 1.2
Proprietary
License
Kimi K2.6
Open Weight
Muse Spark 1.2
Proprietary
Release date
Kimi K2.6
2026-04-20
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
- Muse Spark 1.2 has the higher public score estimate, 70.28 versus 65.5, but the 90% score intervals overlap.
- Workload cost
- Repository review: $0.0595 vs $0.07525. Cache-heavy agent loop: $0.249 vs $0.0975.
- Context tradeoff
- Muse Spark 1.2 has the larger documented window (1M).
Run the same representative tasks against both endpoints before changing production traffic.
Self-host vs API cost
Estimates at 50,000 req/day · 1000 tokens/req average.
Kimi K2.6
API / mo$3,713
Self-host / mo$18,221
Break-even326M/day
Muse Spark 1.2
API / mo$4,125
Self-host / moNot listed
Break-even—
Proprietary model — self-hosting not applicable.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence42 rows
Agentic
Terminal-Bench 2.0
Kimi K2.666.7%SourceMuse Spark 1.2—Not directly comparable
BrowseComp
Kimi K2.683.2%SourceMuse Spark 1.2—Not directly comparable
OSWorld-Verified
Kimi K2.673.1%SourceMuse Spark 1.2—Not directly comparable
Toolathlon
Kimi K2.650%SourceMuse Spark 1.2—Not directly comparable
MCP Atlas
Kimi K2.655.9%SourceMuse Spark 1.2—Not directly comparable
Claw-Eval
Kimi K2.662.3%SourceMuse Spark 1.2—Not directly comparable
DeepSearchQA
Kimi K2.692.5%SourceMuse Spark 1.2—Not directly comparable
WideResearch
Kimi K2.680.8%SourceMuse Spark 1.2—Not directly comparable
Gert Labs
Kimi K2.656.82%SourceMuse Spark 1.2—Not directly comparable
ResearchClawBench
Kimi K2.618.0%SourceMuse Spark 1.2—Not directly comparable
OSWorld 2.0
Kimi K2.64.6%SourceMuse Spark 1.2—Not directly comparable
Terminal-Bench 2.1 (Vals)
Kimi K2.653.6%SourceMuse Spark 1.269.7%SourceMuse Spark 1.2 leads this result
Terminal-Bench 2.1
Kimi K2.6—Muse Spark 1.282.9%SourceNot directly comparable
Coding
SWE-bench Verified
Kimi K2.680.2%SourceMuse Spark 1.2—Not directly comparable
LiveCodeBench v6
Kimi K2.689.6%SourceMuse Spark 1.2—Not directly comparable
SWE-bench Pro
Kimi K2.658.6%SourceMuse Spark 1.2—Not directly comparable
SWE Multilingual
Kimi K2.676.7%SourceMuse Spark 1.2—Not directly comparable
SciCode
Kimi K2.652.2%SourceMuse Spark 1.2—Not directly comparable
Terminal-Bench 2.0
Kimi K2.666.7%SourceMuse Spark 1.2—Not directly comparable
Vibe Code Bench
Kimi K2.637.89%SourceMuse Spark 1.2—Not directly comparable
cursorBench31
Kimi K2.647.6%SourceMuse Spark 1.2—Not directly comparable
LiveCodeBench (Vals)
Kimi K2.686.8%SourceMuse Spark 1.2—Not directly comparable
SWE-bench (Vals)
Kimi K2.676.2%SourceMuse Spark 1.286.6%SourceMuse Spark 1.2 leads this result
Terminal-Bench 2.1
Kimi K2.6—Muse Spark 1.282.9%SourceNot directly comparable
DeepSWE
Kimi K2.6—Muse Spark 1.259.3%SourceNot directly comparable
VulcanBench v3
Kimi K2.6—Muse Spark 1.287.0%SourceNot directly comparable
FrontierSWE v2
Kimi K2.6—Muse Spark 1.212.0%SourceNot directly comparable
Knowledge
GPQA
Kimi K2.690.5%SourceMuse Spark 1.2—Not directly comparable
GPQA-D
Kimi K2.690.5%SourceMuse Spark 1.2—Not directly comparable
HLE
Kimi K2.634.7%SourceMuse Spark 1.2—Not directly comparable
GPQA Diamond (Vals)
Kimi K2.689.1%SourceMuse Spark 1.2—Not directly comparable
MMLU-Pro (Vals)
Kimi K2.687.6%SourceMuse Spark 1.288.3%SourceMuse Spark 1.2 leads this result
Math
AIME26
Kimi K2.696.4%SourceMuse Spark 1.2—Not directly comparable
HMMT Feb 2026
Kimi K2.692.7%SourceMuse Spark 1.2—Not directly comparable
MMAnswerBench
Kimi K2.686.0%SourceMuse Spark 1.2—Not directly comparable
FrontierMath v2 (Tiers 1-3)
Kimi K2.638.966%SourceMuse Spark 1.2—Not directly comparable
FrontierMath v2 (Tier 4)
Kimi K2.614.580%SourceMuse Spark 1.2—Not directly comparable
Multimodal
MMMU-Pro
Kimi K2.679.4%SourceMuse Spark 1.2—Not directly comparable
MMMU-Pro w/ Python
Kimi K2.680.1%SourceMuse Spark 1.2—Not directly comparable
CharXiv
Kimi K2.680.4%SourceMuse Spark 1.2—Not directly comparable
MathVision
Kimi K2.687.4%SourceMuse Spark 1.2—Not directly comparable
V*
Kimi K2.696.9%SourceMuse Spark 1.2—Not directly comparable
Questions
Which is better, Kimi K2.6 or Muse Spark 1.2?
Muse Spark 1.2 has the higher public score estimate, 70.28 versus 65.5, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.
Which is better for coding, Kimi K2.6 or Muse Spark 1.2?
Muse Spark 1.2 leads the public coding lane, 60 to 50.7, with Supported evidence for both models, although the 90% intervals overlap.
Which is better for agentic tasks, Kimi K2.6 or Muse Spark 1.2?
Muse Spark 1.2 leads the public agentic tasks lane, 61 to 46.7, with Supported evidence for both models, although the 90% intervals overlap.
Which costs less, Kimi K2.6 or Muse Spark 1.2?
For the stated presets, chat costs $0.00295 on Kimi K2.6 and $0.00337 on Muse Spark 1.2; repository review costs $0.0595 and $0.07525; the cache-heavy agent loop costs $0.249 and $0.0975. Kimi K2.6 has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, Kimi K2.6 or Muse Spark 1.2?
Muse Spark 1.2 has the larger documented context window: 1M, compared with 256K.
Related comparisons
Last updated September 18, 2026
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