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o4-mini (High) vs Muse Spark Open

At a glance

o4-mini with reasoning effort locked to high for maximum accuracy.

79200K ctx$1.10/$4.40 per M#30/92

Meta's strongest open-weight model, trained specifically for agentic coding workflows.

1.0M ctx$1.25/$4.25 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Cheaper4%
Capability
CapabilityECI78.6
Reasoning & Knowledge
Graduate Science79.6%Expert-Level18.1%Factual Recall19.6%
Math
Math Problems97.8%Competition Math81.7%Research Math24.8%
Coding
Code Editing72.0%
Agentic
Novel Reasoning6.1%Task Horizon1.3h
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Expert-Level—Factual Recall—
Math
Math Problems—Competition Math—Research Math—
Coding
Code Editing—
Agentic
Novel Reasoning—Task Horizon—
Specs
200K
Context
100K
Max output
Apr 2025
Released
1.0M
Context
256K
Max output
Oct 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input12%$1.10/M tokens
Output$4.40/M tokens
Cache read$0.28/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$1.25/M tokens
Output3%$4.25/M tokens
Cache read45%$0.15/M tokens
Chat with o4-mini (High)Go to model
Chat with Muse Spark OpenGo to model
Frequently Asked Questions: o4-mini (High) vs Muse Spark Open▼

Which is better, o4-mini (High) or Muse Spark Open?

▼

Both o4-mini (High) and Muse Spark Open are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, o4-mini (High) or Muse Spark Open?

▼

o4-mini (High) has a lower blended cost. o4-mini (High): $1.10 input / $4.40 output. Muse Spark Open: $1.25 input / $4.25 output.

Which has a larger context window, o4-mini (High) or Muse Spark Open?

▼

Muse Spark Open has a larger context window: o4-mini (High) supports 200K tokens vs Muse Spark Open at 1M tokens.

Do both o4-mini (High) and Muse Spark Open support vision?

▼

Yes, both o4-mini (High) and Muse Spark Open support vision/image input.

What are the key differences between o4-mini (High) and Muse Spark Open?

▼

o4-mini (High) and Muse Spark Open have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both o4-mini (High) and Muse Spark Open for free on idapt.app to see which performs better for your specific needs.

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