Claude Sonnet 5 vs Muse Spark 1.2
Claude Sonnet 5 and Muse Spark 1.2 are closely matched at 49.3 and 41.1 on the LLM Stats Score. Muse Spark 1.2 is 32.0x cheaper per token.
Anthropic · Meta · Updated for 2026
Which is better?
Claude Sonnet 5 and Muse Spark 1.2 are closely matched on the overall LLM Stats Score at 49.3 and 41.1.
In the 1 individual benchmarks reported for both models, Muse Spark 1.2 wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Muse Spark 1.2 is roughly 32.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Muse Spark 1.2 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 Claude Sonnet 5
- you want predictable pricing at $2.00/M input and $10.00/M output
Choose Muse Spark 1.2
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 32.0x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Individual benchmarks
22 reported for Claude Sonnet 5 · 3 for Muse Spark 1.2
Claude Sonnet 5 outperforms in 0 benchmarks, while Muse Spark 1.2 is better at 1 benchmark (DeepSWE 1.1).
Muse Spark 1.2 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Sonnet 5 ($2.00/1M tokens) is 20.0x more expensive than Muse Spark 1.2 ($0.10/1M tokens).
For output processing, Claude Sonnet 5 ($10.00/1M tokens) is 50.0x more expensive than Muse Spark 1.2 ($0.20/1M tokens).
In conclusion, Claude Sonnet 5 is more expensive than Muse Spark 1.2.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Muse Spark 1.2 accepts 1,048,576 input tokens compared to Claude Sonnet 5's 1,000,000 tokens. Muse Spark 1.2 can generate longer responses up to 131,072 tokens, while Claude Sonnet 5 is limited to 64,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Sonnet 5 and Muse Spark 1.2 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Sonnet 5
Muse Spark 1.2
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Sonnet 5 was released on 2026-06-30, while Muse Spark 1.2 was released on 2026-08-05.
Muse Spark 1.2 is 1 month newer than Claude Sonnet 5.
Jun 30, 2026
1 months ago
Aug 5, 2026
3 weeks ago
1mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude Sonnet 5 is available from Anthropic. Muse Spark 1.2 is available from Meta Model API.
Claude Sonnet 5
Muse Spark 1.2
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 5 and Muse Spark 1.2 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 5 vs Muse Spark 1.2.