Model comparison
Claude 2.1 vs Muse Spark 1.3
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 25.2 on the Noometry Index.
Last verified . 3 shared benchmarks.
MetaSummary
- They share 3 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and Muse Spark 1.3 in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 73.1 to 10.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 99.2% for Muse Spark 1.3.
Side by side
| Claude 2.1 | Muse Spark 1.3 | |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 25.2 | 54.8 |
| Released | 2023-11-21 | 2026-09-02 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 7 | 37 |
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Category by category
Coding Muse Spark 1.3 leads
Claude 2.1: 26.2 (#327), Muse Spark 1.3: 56.6 (#21)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| CursorBench | — | 41.6% |
| LMArena WebDev | — | 1657 |
| SciCode | — | 59.7% |
| WeirdML | 7.1% | — |
| LMArena Coding | — | 1514 |
Agentic & Tool Use Not comparable
Claude 2.1: —, Muse Spark 1.3: 38.6 (#30)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| GDP.pdf | — | 27.6% |
Reasoning Muse Spark 1.3 leads
Claude 2.1: 21.4 (#221), Muse Spark 1.3: 54.0 (#27)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| DTBench | 51% | 96.5% |
| Epoch Capabilities Index | 119.27 | 156.75 |
| NYT Connections (extended) | — | 85.1% |
| CritPt | — | 26% |
| Chess Puzzles | — | 38% |
| LMArena Hard Prompts | — | 1503 |
| Mystery Game Puzzles | — | 25% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
| ForecastBench | 54.2 | — |
Math Muse Spark 1.3 leads
Claude 2.1: 10.2 (#315), Muse Spark 1.3: 73.1 (#21)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 99.2% |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| ProofBench | — | 58% |
| LMArena Math | — | 1494 |
Knowledge Muse Spark 1.3 leads
Claude 2.1: 15.4 (#292), Muse Spark 1.3: 42.6 (#95)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| GPQA Diamond | 33% | — |
| LMArena Expert | — | 1516 |
| MMLU | 73.5% | — |
Multimodal Not comparable
Claude 2.1: —, Muse Spark 1.3: 43.7 (#22)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1309 |
| LMArena Document | — | 1471 |
Multilingual Not comparable
Claude 2.1: —, Muse Spark 1.3: 57.4 (#8)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | — | 1481 |
| LMArena Chinese | — | 1529 |
| LMArena French | — | 1524 |
| LMArena German | — | 1515 |
| LMArena Japanese | — | 1474 |
| LMArena Korean | — | 1501 |
| LMArena Russian | — | 1490 |
| LMArena Spanish | — | 1490 |
Instruction Following Not comparable
Claude 2.1: —, Muse Spark 1.3: 77.5 (#22)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | — | 1477 |
Long Context Not comparable
Claude 2.1: —, Muse Spark 1.3: 45.6 (#32)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | — | 1488 |
Writing & Preference Not comparable
Claude 2.1: —, Muse Spark 1.3: 73.6 (#9)
| Benchmark | Claude 2.1 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | — | 1490 |
| LMArena Creative Writing | — | 1455 |
| EQ-Bench Creative Writing | — | 1906 |
| LMArena Multi-Turn | — | 1482 |
Frequently asked questions
Is Claude 2.1 better than Muse Spark 1.3?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 25.2 on the Noometry Index.
Is Claude 2.1 or Muse Spark 1.3 better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Muse Spark 1.3 share?
3 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Muse Spark 1.3 has 37.