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GPT 5.6 Terra vs Muse Spark 1.1

At a glance
OpenAIGPT 5.6 Terra

OpenAI's balanced GPT-5.6 tier — GPT-5.5-class quality for everyday work at half the price.

1.1M ctx$2.50/$15.00 per M
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 5.6 Terra
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Reasoning & Knowledge
Graduate Science92.9%Expert-Level—
Agentic
Terminal Tasks87.4%
MetaMuse Spark 1.1
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-16
Cheaper
Reasoning & Knowledge
Graduate Science—Expert-Level52.2%
Agentic
Terminal Tasks80.0%
Specs
OpenAIGPT 5.6 Terra
1.1M
Context
128K
Max output
Jul 2026
Released
MetaMuse Spark 1.1
1.0M
Context
16K
Max output
Jul 2026
Released
Capabilities
OpenAIGPT 5.6 Terra
Vision
Audio
Reasoning
MetaMuse Spark 1.1
Vision
Audio
Reasoning
Pricing
OpenAIGPT 5.6 Terra
Live pricing, shown before you run
Input$2.50/M tokens
Output$15.00/M tokens
Cache read$0.25/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 5.6 TerraGo to model
Chat with Muse Spark 1.1Go to model
Frequently Asked Questions: GPT 5.6 Terra vs Muse Spark 1.1▼

Which is better, GPT 5.6 Terra or Muse Spark 1.1?

▼

Both GPT 5.6 Terra 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 5.6 Terra or Muse Spark 1.1?

▼

Muse Spark 1.1 has a lower blended cost. GPT 5.6 Terra: $2.50 input / $15.00 output. Muse Spark 1.1: $1.25 input / $4.25 output.

Which has a larger context window, GPT 5.6 Terra or Muse Spark 1.1?

▼

GPT 5.6 Terra has a larger context window: GPT 5.6 Terra supports 1.1M tokens vs Muse Spark 1.1 at 1M tokens.

Do both GPT 5.6 Terra and Muse Spark 1.1 support vision?

▼

Yes, both GPT 5.6 Terra and Muse Spark 1.1 support vision/image input.

What are the key differences between GPT 5.6 Terra and Muse Spark 1.1?

▼

GPT 5.6 Terra and Muse Spark 1.1 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 GPT 5.6 Terra and Muse Spark 1.1 for free on idapt.app to see which performs better for your specific needs.

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