Muse Spark 1.3 vs Claude Opus 5
Detailed pricing comparison and cost analysis.
Updated September 2026
Cost Simulator
| Feature | Muse Spark 1.3 | Claude Opus 5 |
|---|---|---|
| Provider | Meta | Anthropic |
| Input Price (1M) | $1.25 | $5.00 |
| Output Price (1M) | $4.25 | $25.00 |
| Context Window | 1,048,576 | 1,000,000 |
Verdict
Muse Spark 1.3 costs $1.25 per 1M input tokens and $4.25 per 1M output tokens. Claude Opus 5 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens. Muse Spark 1.3 is 75% cheaper on input tokens than Claude Opus 5. For output tokens, Muse Spark 1.3 is the more affordable option at $4.25/1M vs $25.00.
On context window, Muse Spark 1.3 supports 1,048,576 tokens — meaning it can fit more conversation history, documents, or code in a single request. This matters for RAG pipelines, long document analysis, and agentic workflows where context builds up over many turns.
When to choose Muse Spark 1.3
- ✓ You need the lowest input token cost ($ 1.25/1M)
- ✓ Your workload is output-heavy — Muse Spark 1.3 generates text cheaper
- ✓ You need a larger context window (1,048,576 tokens)
- ✓ You are already integrated with Meta
When to choose Claude Opus 5
- ✓ You are already integrated with Anthropic
Use the calculator above to simulate your specific workload and find the exact break-even point. For most applications, the cheapest model is the one that minimises your total monthly bill given your input-to-output token ratio.
Frequently Asked Questions
Is Muse Spark 1.3 cheaper than Claude Opus 5? ▼
Muse Spark 1.3 is cheaper on input tokens at $1.25/1M vs $5.00/1M for Claude Opus 5 — a 75% saving.
What is the context window of Muse Spark 1.3 vs Claude Opus 5? ▼
Muse Spark 1.3 has a 1,048,576-token context window. Claude Opus 5 has a 1,000,000-token context window. Muse Spark 1.3 supports the larger context, suitable for longer documents and agentic workflows.
Which model is better: Muse Spark 1.3 or Claude Opus 5? ▼
The best choice depends on your use case. For cost efficiency on input tokens, Muse Spark 1.3 is the cheaper option. For maximum context length, Muse Spark 1.3 supports 1,048,576 tokens. Use the comparison table above to find the right fit for your workload.