Model Comparison
GPT-5.1 Codex (high)
vs. Muse Spark
Comparing 2 AI models · 10 benchmarks · OpenAI, Meta
Recommended Pick
MeMuse Spark10 metric winsStrongest on: Input price, Output price, Intelligence
Lowest Price
Muse Spark
$0.00/1M input price
Best Reasoning
GPT-5.1 Codex (high)
67.1 reasoning score
Blends available reasoning benchmarks
Best for Coding
Muse Spark
58.6 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
Muse Spark is ∞x cheaper on input tokens than GPT-5.1 Codex (high).
Reasoning gap
GPT-5.1 Codex (high) leads Muse Spark by 10.0 points on reasoning.
Top-pick rationale
Muse Spark wins 10 measurable categories, including Input price, Output price, Intelligence, GPQA.
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
—
Time
—
tok/s
—
Tokens
—
Cost
—
Muse Spark
Meta
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Chat with leading AI models
Use Claude, ChatGPT, Gemini alongside with EU-Hosted Models like Deepseek, Qwen & Kimi.
EU-hosted inference
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 | $0.00/1M |
| Output Cost | $10.00/1M | $0.00/1M |
| 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 | 67.1 | 57.1 |
| Intelligence | 34.7 | 43.1 |
| Coding | — | 58.6 |
| Math | 95.7 | — |
| Standard Benchmarks | ||
| GPQA | 86.0% | 88.4% |
| MMLU Pro | 86.0% | — |
| HLE | 23.4% | 39.9% |
| LiveCodeBench | 84.9% | — |
| AIME 2025 | 95.7% | — |
| SciCode | 40.2% | 51.5% |
| LCR | 67.3% | 69.7% |
| IFBench | 70.0% | 75.9% |
| TAU-bench v2 | 83.0% | 91.5% |
| TerminalBench Hard | 34.8% | 45.5% |
Key Takeaways
Muse Spark offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
GPT-5.1 Codex (high) has the strongest reasoning profile with a 67.1 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)
- Complex reasoning tasks
- Research & analysis
Muse Spark
- Cost-sensitive applications
- High-volume processing
- Code generation
- Software development
