Meta: Muse Spark 1.3 Contributor vs GPT-5.6 Luna
meta-llama/muse-spark-1.3-contributor · openai/gpt-5.6-luna
As of November 2, 2026, Meta: Muse Spark 1.3 Contributor is the cheaper API on UberLLM: $0.0010 per million input tokens and $0.0020 per million output, versus $0.0020 / $0.0121 for GPT-5.6 Luna, about 82% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose Meta: Muse Spark 1.3 Contributor to cut cost; choose GPT-5.6 Luna when context size wins. GPT-5.6 Luna carries the larger context window (1,050,000 vs 1,048,576 tokens), which can matter for long-document work.
Meta: Muse Spark 1.3 Contributor vs GPT-5.6 Luna, side by side
| Spec | Meta: Muse Spark 1.3 Contributor | GPT-5.6 Luna |
|---|---|---|
| Price · input / 1M | $0.0010 | $0.0020 |
| Price · output / 1M | $0.0020 | $0.0121 |
| Context length | 1,048,576 | 1,050,000 |
| Max output tokens | 943,718 | 128,000 |
| Input modalities | text, image, video, audio, file | text, image, file |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 99% off | 99% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 2, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Meta: Muse Spark 1.3 Contributor vs GPT-5.6 Luna — FAQ
Is Meta: Muse Spark 1.3 Contributor or GPT-5.6 Luna cheaper?
Meta: Muse Spark 1.3 Contributor is cheaper on a blended token mix, by about 82%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between Meta: Muse Spark 1.3 Contributor and GPT-5.6 Luna?
Meta: Muse Spark 1.3 Contributor: $0.0010 in / $0.0020 out per 1M tokens. GPT-5.6 Luna: $0.0020 in / $0.0121 out per 1M tokens. That's roughly a 82% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Meta: Muse Spark 1.3 Contributor and GPT-5.6 Luna with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.