OpenAI's balanced GPT-5.6 tier — GPT-5.5-class quality for everyday work at half the price.
Meta's latest multimodal reasoning model for long-running agentic, multi-agent, and coding workflows.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 5.6 Terra and Muse Spark 1.3 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.
Muse Spark 1.3 has a lower blended cost. GPT 5.6 Terra: $2.00 input / $12.00 output. Muse Spark 1.3: $1.25 input / $4.25 output.
GPT 5.6 Terra has a larger context window: GPT 5.6 Terra supports 1.1M tokens vs Muse Spark 1.3 at 1M tokens.
Yes, both GPT 5.6 Terra and Muse Spark 1.3 support vision/image input.
GPT 5.6 Terra and Muse Spark 1.3 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.
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 1.3 for free on idapt.app to see which performs better for your specific needs.