Muse Glimmer

by Meta

Released 5 days after Muse Spark 1.2 · All Meta releases

Muse Glimmer from Meta — text model on the Opper gateway.

Key info

Input
Output
Features
Context window
128K
Max output
Input price
$0.23 /1M
Output price
$1.16 /1M
Released
  • EU residency available
  • Zero data retention on pay-as-you-go
  • No training by default
  • GDPR DPA available

Available routes

Muse Glimmer runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
EUZero data retentionNo$0.23$1.16

Data handling per route

Each route hosting Muse Glimmer has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Melious Germany🇩🇪

Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. EU; DPA available.

Zero data retention
On by default on Pay-as-you-go. Derived from the logging and moderation facts.
Training
No training on customer data.
Logging
None
Moderation
Not established
Caching
Not established
Subprocessor access
Not established
GDPR DPA
DPA available
Transfer mechanism
Not applicable — data stays in EU

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#205 of 633 LLMs
TierEfficient
Output speed108 tok/s
First token0.38s
Intelligence Index18.1
Coding Index49.0
Reasoning & knowledge
GPQA Diamond
84%
Humanity's Last Exam
22%
Long-context reasoning
83%
Coding
SciCode
45%

Get started

Call Muse Glimmer through the Opper gateway with one API key. Let your coding agent set it up, or call it directly — Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "melious/muse-glimmer",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Compare Muse Glimmer with…

Side-by-side on privacy, EU hosting, pricing, and benchmarks.

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