Muse Spark 1.3 Contributor vs Gemini 3.8 Flash. Price and specs.

For 10,000 requests of 2,000 tokens in and 500 out, Muse Spark 1.3 Contributor costs 88% less than Gemini 3.8 Flash on Zurelay: $1.20 against $9.90. Both are below their labs' list prices: 60% for Muse Spark 1.3 Contributor and 71% for Gemini 3.8 Flash.

Try both with one keySee the specs

Side by side

Specs and prices. Live.

Muse Spark 1.3 Contributor and Gemini 3.8 Flash side by side
Muse Spark 1.3 ContributorGemini 3.8 Flash
LabMetaGoogle
ReleasedSep 2, 2026Sep 2, 2026
Context window1M tokens1M tokens
Max output—64K tokens
ReadsText, Images, PDFsText, Images, PDFs, Audio, Video
Reasoning levelsminimal, low, medium, high, xhighlow, medium, high
Price per 1M, in / out$0.04 / $0.08$0.22 / $1.10
Lab list price$0.10 / $0.20$0.75 / $3.75
Cached input per 1M$0.001$0.032
10K typical requests$1.20$9.90

Prices in US dollars per 1M tokens on Zurelay, live from the catalog. A typical request is 2,000 tokens in and 500 out. Output limits are each lab's.

What they're for

As each lab describes it.

Muse Spark 1.3 Contributor

Muse Spark 1.3 Contributor is Meta's Muse Spark 1.3 at Meta's Contributor tier: the same model as standard Muse Spark 1.3 at a much lower price, because Meta may use the prompts and completions sent to this tier to train future Meta models. Don't send it anything private or sensitive; for that, use Muse Wonder, which runs at Meta's standard tier. The Zurelay Muse Spark 1.3 Contributor API serves it through one OpenAI-compatible endpoint with a 1M-token context window, at 60% below Meta's list price.

  • Prototypes and tests
  • Work on public data
  • Sub-agents and tool loops
Muse Spark 1.3 Contributor API

Gemini 3.8 Flash

Gemini 3.8 Flash is Google's most intelligent Flash model, built for long-horizon software engineering, autonomous agents and complex enterprise workflows, and released on September 2, 2026. The Zurelay Gemini 3.8 Flash API serves it through one OpenAI-compatible endpoint with a 1M-token context window, at 71% below Google's list price.

  • Coding agents
  • Finance and legal work
  • Science and research
Gemini 3.8 Flash API

Try both

Test on your own prompts.

Specs don't say which model handles your work better. Send the same requests to both and compare the answers, the tokens and the bill. On Zurelay that's a change of model name.

To price a whole month, use the LLM cost calculator.

compare.py
from openai import OpenAI
client = OpenAI(base_url="https://api.zurelay.com/v1", api_key="YOUR_ZURELAY_KEY")
prompt = [{"role": "user", "content": "Summarize this contract: ..."}]
# Same key, same code: only the model name changes
for model in ["muse-spark-1.3-contributor", "gemini-3.8-flash"]:
    reply = client.chat.completions.create(model=model, messages=prompt)
    print(model, reply.usage.total_tokens, reply.choices[0].message.content[:200])

FAQ

Muse Spark 1.3 Contributor vs Gemini 3.8 Flash questions.

Anything else? Ask our team and we’ll answer by email.

Is Muse Spark 1.3 Contributor or Gemini 3.8 Flash cheaper?

For 10,000 requests of 2,000 tokens in and 500 out, Muse Spark 1.3 Contributor costs 88% less than Gemini 3.8 Flash on Zurelay: $1.20 against $9.90. Per 1M tokens, Muse Spark 1.3 Contributor is $0.04 input and $0.08 output, and Gemini 3.8 Flash is $0.22 and $1.10.

Which has the bigger context window?

They're the same on Zurelay: 1M tokens each.

Can I use Muse Spark 1.3 Contributor and Gemini 3.8 Flash with one API key?

Yes. One Zurelay key calls both. With an OpenAI SDK, point it at https://api.zurelay.com/v1 and change only the model name, muse-spark-1.3-contributor or gemini-3.8-flash, to switch.

Are these the real models?

Yes. Each model is served over several routes run by independent sellers, and every route is tested before it serves requests and every day after, with identity, dated-knowledge and reasoning checks that catch an older or different model sold under the name you asked for.

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