Model comparison
Muse Spark 1.1 vs Claude Fable 5
- Input
- $1.25
- Output
- $4.25
- Context
- 1M
- Released
- 2026-07-09
- Input
- $10.00
- Output
- $50.00
- Context
- 1M
- Released
- 2026-06-09
Claude Fable 5 scores higher on 2 of the 2 benchmarks both models report; Muse Spark 1.1 is cheaper on input tokens ($1.3 vs $10 per 1M, 8×).
Specs and pricing side by side
| Spec | Muse Spark 1.1 | Claude Fable 5 |
|---|---|---|
| Maker | Meta | Anthropic |
| Released | 2026-07-09 | 2026-06-09 |
| Context window | 1M | 1Msame |
| Max output | not published | 128K |
| Input price | $1.25 | $10.00 |
| Output price | $4.25 | $50.00 |
| Parameters | Undisclosed | Undisclosedsame |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text, Visionsame |
Not published by either maker: knowledge cutoff.
Benchmarks both models report
| Benchmark | Muse Spark 1.1 | Claude Fable 5 |
|---|---|---|
| OSWorld-Verified | 80.8% | 85% |
| SWE-Bench Pro | 61.5% | 80.3% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Muse Spark 1.1 if…
- Cost matters: input tokens cost 8× less ($1.3 vs $10 per 1M).
- Your use case is: reach for it when you need a long-context agent that can drive tools, browsers, and computers across multi-step workflows.
Pick Claude Fable 5 if…
- You care about OSWorld-Verified, SWE-Bench Pro (it scores higher on 2 shared benchmarks).
- Your use case is: reach for it for the most demanding multi-step agentic coding across large codebases when you want above-Opus capability.
FAQ
Which is better, Muse Spark 1.1 or Claude Fable 5?
Claude Fable 5 scores higher on 2 of the 2 benchmarks both models report; Muse Spark 1.1 is cheaper on input tokens ($1.3 vs $10 per 1M, 8×). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is Muse Spark 1.1?
Muse Spark 1.1: $1.25 input, $4.25 output. Claude Fable 5: $10.00 input, $50.00 output (list API prices as published by each maker).
What are the context windows of Muse Spark 1.1 and Claude Fable 5?
Muse Spark 1.1 offers 1M; Claude Fable 5 offers 1M with up to 128K output.
Is Muse Spark 1.1 newer than Claude Fable 5?
Muse Spark 1.1 was released 2026-07-09; Claude Fable 5 was released 2026-06-09.
Go deeper
- Muse Spark 1.1: full specs, pricing and benchmarks
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