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Inkling-Small vs Muse Spark Open

Muse Spark Open leads the LLM Stats Score 45.3 to 38.2. Inkling-Small is 3.8x cheaper per token.

Thinking Machines Lab · Meta · Updated for 2026

Which is better?

Muse Spark Open leads the overall LLM Stats Score 45.3 to 38.2, ranking #42 overall.

In the 6 individual benchmarks reported for both models, Muse Spark Open wins 4; this is a narrower head-to-head signal than the composite indexes.

On price, Inkling-Small is roughly 3.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Muse Spark Open also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Inkling-Small

  • cost matters — it's about 3.8x cheaper per token

Choose Muse Spark Open

  • overall performance matters — it scores 45.3 and ranks #42 on LLM Stats
  • your work emphasizes reasoning and agents — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 4 of 6 exact shared results
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Inkling-Small
Thinking Machines Lab
Muse Spark Open
Meta
Core performance indexes
LLM Stats Score
38.2
#83
45.3
#42
Reasoning
37.6
#84
45.7
#35
Coding
28.2
#74
33.5
#40
Agents
22.5
#77
30.8
#43
Cost, coverage & limits
Benchmark wins
2 of 6
4 of 6
Input price
$0.30 / M
$1.25 / M
Output price
$1.20 / M
$4.25 / M
Context window
256,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Inkling-Small
Muse Spark Open
Math
33.0#60
33.3#58
Vision
20.2#87
31.3#33
Tool use
18.5#80
23.3#45
Multimodal
17.2#94
33.1#20
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

24 reported for Inkling-Small · 17 for Muse Spark Open

6 shared

Inkling-Small outperforms in 2 benchmarks (Artificial Analysis, GPQA), while Muse Spark Open is better at 4 benchmarks (GDPval-AA, MCP Atlas, SciCode, Terminal-Bench 2.1).

Muse Spark Open shows notably better performance in the majority of benchmarks.

Fri Oct 23 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Inkling-Small costs less

For input processing, Inkling-Small ($0.30/1M tokens) is 4.2x cheaper than Muse Spark Open ($1.25/1M tokens).

For output processing, Inkling-Small ($1.20/1M tokens) is 3.5x cheaper than Muse Spark Open ($4.25/1M tokens).

In conclusion, Muse Spark Open is more expensive than Inkling-Small.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Oct 23 2026 • llm-stats.com
Thinking Machines Lab
Inkling-Small
Input tokens$0.30
Output tokens$1.20
Best providerUnknown Organization
Meta
Muse Spark Open
Input tokens$1.25
Output tokens$4.25
Best providerTogether
Notice missing or incorrect data?

Model Size

Parameter count comparison

540.0B diff

Muse Spark Open has 540.0B more parameters than Inkling-Small, making it 195.7% larger.

Thinking Machines Lab
Inkling-Small
276.0Bparameters
Meta
Muse Spark Open
816.0Bparameters
276.0B
Inkling-Small
816.0B
Muse Spark Open

Context Window

Maximum input and output token capacity

Muse Spark Open accepts 1,048,576 input tokens compared to Inkling-Small's 256,000 tokens. Muse Spark Open can generate longer responses up to 1,048,576 tokens, while Inkling-Small is limited to 256,000 tokens.

Thinking Machines Lab
Inkling-Small
Input256,000 tokens
Output256,000 tokens
Meta
Muse Spark Open
Input1,048,576 tokens
Output1,048,576 tokens
Fri Oct 23 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Inkling-Small and Muse Spark Open support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Inkling-Small

Text
Images
Audio
Video

Muse Spark Open

Text
Images
Audio
Video

License

Usage and distribution terms

Inkling-Small is licensed under Apache 2.0, while Muse Spark Open uses Muse Model License.

License differences may affect how you can use these models in commercial or open-source projects.

Inkling-Small

Apache 2.0

Open weights

Muse Spark Open

Muse Model License

Open weights

Release Timeline

When each model was launched

Inkling-Small was released on 2026-07-30, while Muse Spark Open was released on 2026-10-15.

Muse Spark Open is 3 months newer than Inkling-Small.

Inkling-Small

Jul 30, 2026

2 months ago

Muse Spark Open

Oct 15, 2026

5 days ago

2mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Inkling-Small is available from Thinking Machines Lab, DeepInfra. Muse Spark Open is available from Together.

Inkling-Small

thinking-machines logo
Unknown Organization
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.45/1MOutput Price:Output: $1.20/1M

Muse Spark Open

together logo
Together
Input Price:Input: $1.25/1MOutput Price:Output: $4.25/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Inkling-Small and Muse Spark Open side-by-side, then vote on the output you prefer.

Inkling-Small
✓ Preferred
Muse Spark Open
Open in Playground

FAQ

Common questions about Inkling-Small vs Muse Spark Open.

Which is better, Inkling-Small or Muse Spark Open?

Muse Spark Open leads the LLM Stats Score 45.3 to 38.2. Inkling-Small is made by Thinking Machines Lab and Muse Spark Open is made by Meta. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Inkling-Small compare to Muse Spark Open in benchmarks?

Inkling-Small scores AIME 2026: 95.5%, VoiceBench Avg: 90.1%, GPQA: 89.5%, Global-MMLU-Lite: 86.7%, ARC-AGI: 84.0%. Muse Spark Open scores MCP Atlas: 89.2%, GPQA: 89.0%, OSWorld-Verified: 80.4%, BabyVision: 80.2%, Terminal-Bench 2.1: 76.4%.

Is Inkling-Small cheaper than Muse Spark Open?

Inkling-Small is 4.2x cheaper for input tokens. Inkling-Small costs $0.30/M input and $1.20/M output via thinking-machines. Muse Spark Open costs $1.25/M input and $4.25/M output via together.

What are the context window sizes for Inkling-Small and Muse Spark Open?

Inkling-Small supports 256K tokens and Muse Spark Open supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Inkling-Small and Muse Spark Open?

Key differences include LLM Stats Score (38.2 vs 45.3), context window (256K vs 1.0M), input pricing ($0.30 vs $1.25/M), licensing (Apache 2.0 vs Muse Model License). See the full comparison above for benchmark-by-benchmark results.

Who makes Inkling-Small and Muse Spark Open?

Inkling-Small is developed by Thinking Machines Lab and Muse Spark Open is developed by Meta.

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