GPT-5.1 Codex vs Muse Spark 1.2
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Muse Spark 1.2 by Meta wins on 4 of 6 benchmarks against GPT-5.1 Codex by OpenAI, which leads on 1. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, Muse Spark 1.2 scores 1328 on Design Arena ELO compared to GPT-5.1 Codex's 1197, while Muse Spark 1.2 scores 1321 on Website Arena ELO compared to GPT-5.1 Codex's 1174.
Context: In context, Muse Spark 1.2 scores 1.0M on Context Length compared to GPT-5.1 Codex's 400K.
Pricing Comparison
GPT-5.1 Codex costs $1.3/1M input tokens and $10.0/1M output tokens, while Muse Spark 1.2 costs $1.3/1M input and $4.3/1M output. Both models are priced identically for input tokens.
Verdict
GPT-5.1 Codex and Muse Spark 1.2 are closely matched. The best choice depends on your specific use case and priorities.
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GPT-5.1 Codex vs Muse Spark 1.2 — FAQ
Which is better, GPT-5.1 Codex or Muse Spark 1.2?
Muse Spark 1.2 wins on more benchmarks overall (4 vs 1). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-5.1 Codex compare to Muse Spark 1.2 for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is GPT-5.1 Codex cheaper than Muse Spark 1.2?
Both models are priced the same at $1.3/1M input tokens. GPT-5.1 Codex output costs $10.0/1M and Muse Spark 1.2 output costs $4.3/1M.
Which is faster, GPT-5.1 Codex or Muse Spark 1.2?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the GPT-5.1 Codex vs Muse Spark 1.2 comparison cover?
This comparison covers 6 benchmarks including Input Cost, Output Cost, Context Length, Cached Input Cost, Design Arena ELO, Website Arena ELO. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.