AI model comparison
Compare recorded price, context, output limits, speed, latency, capabilities, and input/output support. Every missing value stays visible, and unsourced benchmarks are excluded.
Claude Opus 4.1 (latest) and Muse Spark 1.1 both come up when teams are choosing a model for production work, and the honest answer usually depends on your workload rather than a leaderboard. This page puts their published specifications side by side — context window, token pricing, supported inputs and outputs — so you can see where they actually differ.
Anthropic
Flagship Claude model for deep reasoning, coding, and long-horizon agents
Accepts
Produces
Meta
Muse Spark is a natively multimodal reasoning model with support for tool-use, visual chain of thought, and multi-agent orchestration.
Accepts
Produces
At a glance
This is a directional summary of the values recorded in this directory—not a universal quality verdict. Test the finalists on your own prompts before committing.
Where Claude Opus 4.1 (latest) leads in recorded data
No complete recorded factor currently favors this model. That does not establish lower real-world quality.
Where Muse Spark 1.1 leads in recorded data
Context capacity
Higher listed limit
Claude Opus 4.1 (latest):200K
Muse Spark 1.1:1M
Muse Spark 1.1
Maximum output
Higher listed limit
Claude Opus 4.1 (latest):32K
Muse Spark 1.1:32K
Same recorded value
Input price
Lower recorded price
Claude Opus 4.1 (latest):$15.00
Muse Spark 1.1:$1.25
Muse Spark 1.1
Output price
Lower recorded price
Claude Opus 4.1 (latest):$75.00
Muse Spark 1.1:$4.25
Muse Spark 1.1
Output speed
Higher recorded throughput
Claude Opus 4.1 (latest):—
Muse Spark 1.1:—
No complete comparison
Time to first token
Lower recorded latency
Claude Opus 4.1 (latest):—
Muse Spark 1.1:—
No complete comparison
Intelligence Index
Higher directory index
Claude Opus 4.1 (latest):—
Muse Spark 1.1:—
No complete comparison
Evidence
A score appears only when both records include a verified source. It is not treated as a universal ranking.
Specifications
| Specification | Claude Opus 4.1 (latest) | Muse Spark 1.1 |
|---|---|---|
| Provider | Anthropic | Meta |
| Model family | claude-opus | muse |
| Accepted inputs | text, image, pdf | text, image, pdf, video |
| Produced outputs | text | text |
| Context window | 200K | 1MRecorded lead |
| Max output | 32K | 32K |
| Intelligence Index | — | — |
| Input price / 1M | $15.00 | $1.25Recorded lead |
| Output price / 1M | $75.00 | $4.25Recorded lead |
| Output speed | — | — |
| Time to first token | — | — |
| Reasoning mode | Documented | Documented |
| Tool calling | Documented | Documented |
| Image input | Documented | Documented |
| Audio input | Not documented | Not documented |
| Structured output | Not documented | Documented |
| License | Proprietary | Proprietary |
| Released | Aug 5, 2025 | Apr 8, 2026 |
Workload guidance
On the published numbers, Muse Spark 1.1 accepts the larger context window and Muse Spark 1.1 is cheaper per input token. Which matters more depends on whether your bottleneck is document size or spend — the table above has the exact figures.
Provenance
Prices and hosted performance can change. SyncDev records source references and clearly separates documented specifications from measured values; confirm commercial terms with the provider before deployment.
Claude Opus 4.1 (latest)
Anthropic · model record and recorded source
Muse Spark 1.1
Meta · model record and recorded source
Choose any two approved model records and review them with the same evidence rules.