Muse Spark Open vs Nova 2 Sonic
Muse Spark Open leads the LLM Stats Score 44.9 to 8.7. Nova 2 Sonic is 2.1x cheaper per token.
Meta · Amazon · Updated for 2026
Which is better?
Muse Spark Open leads the overall LLM Stats Score 44.9 to 8.7, ranking #43 overall.
On price, Nova 2 Sonic is roughly 2.1x 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 Muse Spark Open
- overall performance matters — it scores 44.9 and ranks #43 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Oct 2026
- you need open weights you can self-host or fine-tune
Choose Nova 2 Sonic
- cost matters — it's about 2.1x cheaper per token
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
17 reported for Muse Spark Open · 4 for Nova 2 Sonic
Muse Spark Open and Nova 2 Sonicdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Muse Spark Open ($1.25/1M tokens) is 3.8x more expensive than Nova 2 Sonic ($0.33/1M tokens).
For output processing, Muse Spark Open ($4.25/1M tokens) is 1.5x more expensive than Nova 2 Sonic ($2.75/1M tokens).
In conclusion, Muse Spark Open is more expensive than Nova 2 Sonic.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Muse Spark Open accepts 1,048,576 input tokens compared to Nova 2 Sonic's 1,000,000 tokens. Muse Spark Open can generate longer responses up to 1,048,576 tokens, while Nova 2 Sonic is limited to 65,536 tokens.
Input capabilities
Documented input modalities across available providers
Both Muse Spark Open and Nova 2 Sonic support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Muse Spark Open
Nova 2 Sonic
License
Usage and distribution terms
Muse Spark Open is licensed under Muse Model License, while Nova 2 Sonic uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Muse Model License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Muse Spark Open was released on 2026-10-15, while Nova 2 Sonic was released on 2025-12-02.
Muse Spark Open is 11 months newer than Nova 2 Sonic.
Oct 15, 2026
4 days ago
10mo newerDec 2, 2025
10 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Muse Spark Open is available from Together. Nova 2 Sonic is available from Bedrock.
Muse Spark Open
Nova 2 Sonic
Outputs Comparison
Judge for yourself.
Run your own prompts against Muse Spark Open and Nova 2 Sonic side-by-side, then vote on the output you prefer.
FAQ
Common questions about Muse Spark Open vs Nova 2 Sonic.