Claude 3 Opus vs Muse Spark Open
Muse Spark Open leads the LLM Stats Score 44.9 to 9.5. Muse Spark Open is 15.0x cheaper per token.
Anthropic · Meta · Updated for 2026
Which is better?
Muse Spark Open leads the overall LLM Stats Score 44.9 to 9.5, ranking #43 overall.
In the 1 individual benchmarks reported for both models, Muse Spark Open wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Muse Spark Open is roughly 15.0x 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 Claude 3 Opus
- you want predictable pricing at $15.00/M input and $75.00/M output
Choose Muse Spark Open
- overall performance matters — it scores 44.9 and ranks #43 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 15.0x 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 Oct 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
11 reported for Claude 3 Opus · 17 for Muse Spark Open
Claude 3 Opus outperforms in 0 benchmarks, while Muse Spark Open is better at 1 benchmark (GPQA).
Muse Spark Open 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 3 Opus ($15.00/1M tokens) is 12.0x more expensive than Muse Spark Open ($1.25/1M tokens).
For output processing, Claude 3 Opus ($75.00/1M tokens) is 17.6x more expensive than Muse Spark Open ($4.25/1M tokens).
In conclusion, Claude 3 Opus is more expensive than Muse Spark Open.*
* 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 Claude 3 Opus's 200,000 tokens. Muse Spark Open can generate longer responses up to 1,048,576 tokens, while Claude 3 Opus is limited to 200,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude 3 Opus and Muse Spark Open support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude 3 Opus
Muse Spark Open
License
Usage and distribution terms
Claude 3 Opus is licensed under a proprietary license, while Muse Spark Open uses Muse Model License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Muse Model License
Open weights
Release Timeline
When each model was launched
Claude 3 Opus was released on 2024-02-29, while Muse Spark Open was released on 2026-10-15.
Muse Spark Open is 32 months newer than Claude 3 Opus.
Feb 29, 2024
2.6 years ago
Oct 15, 2026
2 days ago
2.6yr 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 3 Opus is available from Anthropic, Bedrock, Google. Muse Spark Open is available from Together.
Claude 3 Opus
Muse Spark Open
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3 Opus and Muse Spark Open side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3 Opus vs Muse Spark Open.