# Muse Glimmer 30B vs Grok 4.20 (multi-agent)

Canonical HTML page: [Muse Glimmer 30B vs Grok 4.20 (multi-agent)](<https://impossibl.com/compare/meta/muse-glimmer-30b/xai/grok-4.20-multi-agent-0309>)
Markdown alternative: [Muse Glimmer 30B vs Grok 4.20 (multi-agent) as Markdown](<https://impossibl.com/compare/meta/muse-glimmer-30b/xai/grok-4.20-multi-agent-0309.md>)

Compare API pricing, context windows, and capabilities side by side. Prices are published API usage rates in USD; check billing units and context tiers alongside each price.

## Specifications and pricing

| Specification | Muse Glimmer 30B | Grok 4.20 (multi-agent) |
| --- | --- | --- |
| API identifier | meta/muse-glimmer-30b | xai/grok-4.20-multi-agent-0309 |
| Creator | Meta | xAI |
| Model type | Text generation | Text generation |
| Inputs | text, image | text, image |
| Outputs | text | text |
| Base input price (USD) | $0.35 per million input tokens | $1.25 per million input tokens |
| Base output price (USD) | $1.50 per million output tokens | $2.50 per million output tokens |
| Cache read price (USD) | $0.04 per million cached input tokens | $0.20 per million cached input tokens |
| Cache write price (USD) | Not published | Not published |
| One-hour cache write price (USD) | Not published | Not published |
| Audio input token price (USD) | Not published | Not published |
| Context window | 131,072 tokens | 1,000,000 tokens |
| Tool calling | Not published | Not published |
| Endpoints | /v1/chat/completions | /v1/chat/completions |
| Context pricing tiers (USD per million tokens) | None published | Over 200,000 input tokens: $2.50 input / $5.00 output |
| Retirement | Not announced in the public catalog | Not announced in the public catalog |

When total input, including cached input, strictly exceeds a context threshold, the highest qualifying tier applies to the whole request. Consult each model's complete Markdown for tier-specific cache rates; an unpublished tier cache price does not establish the base cache rate.

## Muse Glimmer 30B vs Grok 4.20 (multi-agent): side-by-side summary

Muse Glimmer 30B and Grok 4.20 (multi-agent) are available through the Impossibl API.

They share the `/v1/chat/completions` endpoint. Set the model identifier to select the model for a supported request.

Muse Glimmer 30B is created by Meta. It has a 131,072-token context window. Base API pricing (USD): $0.35 per million input tokens; $1.50 per million output tokens.

Grok 4.20 (multi-agent) is created by xAI. It has a 1,000,000-token context window. Base API pricing (USD): $1.25 per million input tokens; $2.50 per million output tokens. Above 200,000 input tokens per request, context-tier rates apply to the whole request.

## Model details

- [Muse Glimmer 30B: full model facts as Markdown](<https://impossibl.com/meta/muse-glimmer-30b.md>); [HTML model page](<https://impossibl.com/meta/muse-glimmer-30b>)
- [Grok 4.20 (multi-agent): full model facts as Markdown](<https://impossibl.com/xai/grok-4.20-multi-agent-0309.md>); [HTML model page](<https://impossibl.com/xai/grok-4.20-multi-agent-0309>)

For compatible text or embedding models with token pricing, the HTML comparison page provides a shared workload calculator. It excludes cache creation, tool calls, taxes, balance-purchase fees, and workspace-specific adjustments.

## Sources and related links

Prices, capabilities, limits, and availability describe the public Impossibl API offering. An unpublished fact is unknown; a published zero price is zero. Compare matching billing units and check context tiers before estimating costs.

- [Public Impossibl model catalog](<https://api.impossibl.com/v1/models>)
- [Full model directory as JSON](<https://impossibl.com/models.json>)
- [Model directory as Markdown](<https://impossibl.com/models.md>)
- [API quickstart](<https://impossibl.com/docs/agent-quickstart>)
- [Model documentation](<https://impossibl.com/docs/models>)