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Muse Spark 1.1 vs GPT 5.5 Pro

At a glance
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
OpenAIGPT 5.5 Pro

OpenAI's high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads.

921.1M ctx$30.00/$180.00 per M#1/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
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
Competition Math—Research Math—
Agentic
Terminal Tasks80.0%Novel Reasoning—
OpenAIGPT 5.5 Pro
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI91.8
Reasoning & Knowledge
Graduate Science93.9%Expert-Level—Factual Recall64.5%
Math
Competition Math100.0%Research Math52.4%
Agentic
Terminal Tasks—Novel Reasoning84.6%
Specs
MetaMuse Spark 1.1
1.0M
Context
16K
Max output
Jul 2026
Released
OpenAIGPT 5.5 Pro
1.1M
Context
128K
Max output
Apr 2026
Released
Capabilities
MetaMuse Spark 1.1
Vision
Audio
Reasoning
OpenAIGPT 5.5 Pro
Vision
Audio
Reasoning
Pricing
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
OpenAIGPT 5.5 Pro
Live pricing, shown before you run
Input$30.00/M tokens
Output$180.00/M tokens
Web search$0.01/search
Chat with Muse Spark 1.1Go to model
Chat with GPT 5.5 ProGo to model
Frequently Asked Questions: Muse Spark 1.1 vs GPT 5.5 Pro▼

Which is better, Muse Spark 1.1 or GPT 5.5 Pro?

▼

Both Muse Spark 1.1 and GPT 5.5 Pro 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, Muse Spark 1.1 or GPT 5.5 Pro?

▼

Muse Spark 1.1 has a lower blended cost. Muse Spark 1.1: $1.25 input / $4.25 output. GPT 5.5 Pro: $30.00 input / $180.00 output.

Which has a larger context window, Muse Spark 1.1 or GPT 5.5 Pro?

▼

GPT 5.5 Pro has a larger context window: Muse Spark 1.1 supports 1M tokens vs GPT 5.5 Pro at 1.1M tokens.

Do both Muse Spark 1.1 and GPT 5.5 Pro support vision?

▼

Yes, both Muse Spark 1.1 and GPT 5.5 Pro support vision/image input.

What are the key differences between Muse Spark 1.1 and GPT 5.5 Pro?

▼

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 Muse Spark 1.1 and GPT 5.5 Pro for free on idapt.app to see which performs better for your specific needs.

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