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9 undominated of 134 · Aug 28, 2026
As of Aug 28, 2026, GPT-5 is dominated for Balanced on LMArena. Muse Spark 1.1 scores 72.7 higher and costs 42% less, with a covering envelope. 9 of 134 rated, priced standard models are undominated.
Muse Spark 1.1 is both better and cheaper than GPT-5.
Envelope-safe replacements
Each row scores at least as high, costs no more, and covers this model’s context, output, modalities, tools, and reasoning. A cheaper narrower model is not listed here.
| Model | LMArena | Effective $/M | You save |
|---|---|---|---|
| Muse Spark 1.1 | 1478.3 +72.7 | $2.00/M | 42% |
| Grok 4.5 | 1452.3 +46.7 | $3.00/M | 13% |
| Grok 4.6 | 1443.7 +38.1 | $3.00/M | 13% |
| GPT-5.1 | 1441.4 +35.8 | $3.44/M | 0% |
| GPT-5.6 Luna | 1428.5 +22.9 | $0.450/M | 87% |
| GPT-5.4 Mini | 1412.1 +6.5 | $1.69/M | 51% |
Higher score, lower price, named losses
Not a drop-in. The loss is why these are not a recommendation.
| Model | LMArena | Effective $/M | You give up |
|---|---|---|---|
| Gemini 3.7 Flash | 1490.2 | $0.750/M | max output |
| Gemini 3.5 Flash | 1482.6 | $3.38/M | max output |
| Qwen3.8 Max | 1481.9 | $3.00/M | file |
| GLM 5.3 | 1476.9 | $2.15/M | image, file |
| Gemini 3.6 Flash | 1476.5 | $1.50/M | max output |
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