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GPT 5.4 Pro vs Muse Spark 1.1

At a glance
OpenAIGPT 5.4 Pro

OpenAI's most advanced reasoning model, built on GPT 5.4's unified architecture.

891.1M ctx$30.00/$180.00 per M#5/92
MetaMuse Spark 1.1

Meta's multimodal reasoning model built for agentic work and real-world coding.

1.0M ctx$1.25/$4.25 per M
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
OpenAIGPT 5.4 Pro
Reasoning
CodingInsufficient data
AgenticInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI89.1
Reasoning & Knowledge
Graduate Science94.6%Expert-Level—Factual Recall47.8%
Math
Research Math50.0%
Agentic
Terminal Tasks—Novel Reasoning83.3%
MetaMuse Spark 1.1
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-16
Cheaper
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Expert-Level52.2%Factual Recall—
Math
Research Math—
Agentic
Terminal Tasks80.0%Novel Reasoning—
Specs
OpenAIGPT 5.4 Pro
1.1M
Context
128K
Max output
Mar 2026
Released
MetaMuse Spark 1.1
1.0M
Context
16K
Max output
Jul 2026
Released
Capabilities
OpenAIGPT 5.4 Pro
Vision
Audio
Reasoning
MetaMuse Spark 1.1
Vision
Audio
Reasoning
Pricing
OpenAIGPT 5.4 Pro
Live pricing, shown before you run
Input$30.00/M tokens
Output$180.00/M tokens
Web search$0.01/search
MetaMuse Spark 1.1
Live pricing, shown before you run
Input$1.25/M tokens
Output$4.25/M tokens
Cache read$0.15/M tokens
Web search$0.003/search
Chat with GPT 5.4 ProGo to model
Chat with Muse Spark 1.1Go to model
Frequently Asked Questions: GPT 5.4 Pro vs Muse Spark 1.1▼

Which is better, GPT 5.4 Pro or Muse Spark 1.1?

▼

Both GPT 5.4 Pro and Muse Spark 1.1 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, GPT 5.4 Pro or Muse Spark 1.1?

▼

Muse Spark 1.1 has a lower blended cost. GPT 5.4 Pro: $30.00 input / $180.00 output. Muse Spark 1.1: $1.25 input / $4.25 output.

Which has a larger context window, GPT 5.4 Pro or Muse Spark 1.1?

▼

GPT 5.4 Pro has a larger context window: GPT 5.4 Pro supports 1.1M tokens vs Muse Spark 1.1 at 1M tokens.

Do both GPT 5.4 Pro and Muse Spark 1.1 support vision?

▼

Yes, both GPT 5.4 Pro and Muse Spark 1.1 support vision/image input.

What are the key differences between GPT 5.4 Pro and Muse Spark 1.1?

▼

Key differences: Muse Spark 1.1 is significantly cheaper. Compare full specs on this page.

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 GPT 5.4 Pro and Muse Spark 1.1 for free on idapt.app to see which performs better for your specific needs.

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