Model Comparison
GPT-5.1 Codex (high)
vs. Muse Spark
Comparing 2 AI models · 0 benchmarks · OpenAI, Meta
Recommended Pick
MeMuse Spark2 metric winsStrongest on: Reasoning, Intelligence
Lowest Price
GPT-5.1 Codex (high)
$1.25/1M input price
Best Reasoning
Muse Spark
31.3 reasoning score
Blends available reasoning benchmarks
Best for Coding
Muse Spark
58.6 coding index
Differences That Matter
Reasoning gap
Muse Spark leads GPT-5.1 Codex (high) by 7.6 points on reasoning.
Top-pick rationale
Muse Spark wins 2 measurable categories, including Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5.1 Codex (high)
OpenAI
TTFT
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Time
—
tok/s
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Tokens
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Cost
—
Muse Spark
Meta
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Servers in Germany & Finland. Designed to meet strict GDPR and ISO 27001 compliance requirements.
Full Comparison
| Metric | Op GPT-5.1 Codex (high) | Top Pick Me Muse Spark |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.25/1M | — |
| Output Cost | $10.00/1M | — |
| Blended (3:1) | $3.44/1M | — |
| Specifications | ||
| Organization | OpenAI | Meta |
| Release Date | Nov 13, 2025 | Apr 8, 2026 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 23.7 | 31.3 |
| Intelligence | 23.7 | 31.3 |
| Coding | — | 58.6 |
Key Takeaways
GPT-5.1 Codex (high) offers the best value at $1.25/1M,making it ideal for high-volume applications and cost-conscious projects.
Muse Spark has the strongest reasoning profile with a 31.3 reasoning score,combining the available reasoning-heavy benchmarks.
Muse Spark reaches a 58.6 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-5.1 Codex (high)
- Cost-sensitive applications
- High-volume processing
Muse Spark
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
