WhichAI / Models / Muse Spark 1.3

Muse Spark 1.3

· verified October 14, 2026

public paid api in Generator agents vision reasoning long-context value

Provider

Statuspublic

AA Intelligence Index48.1 (official, read October 14, 2026)

Released2026-09-02

Context window1.05M

ModalitiesText + image + files + audio + video

API price $/1M (in / out)$1.25 / $4.25 · $0.15 per 1M cached input · up to 940K output tokens · a Contributor tier runs at $0.10/$0.20

Speedn/a

AccessReleased September 2, 2026 · API $1.25/$4.25 per 1M tokens · Contributor tier $0.10/$0.20

In one line

Meta's second-place finish, and the best value in the top five by a wide margin: a fifth of the frontier input price, natively multimodal across audio and video, and an output window measured in hundreds of thousands of tokens. Three versions in eight weeks says Meta has stopped experimenting with the Muse line and started shipping it.

Coding86

Reasoning89

Writing82

Agents & tools90

Category scores (0-100) are WhichAI blended ratings: public category leaderboards plus editorial judgment. Guidance, not official measurements.

Alternatives worth a look

GPT-6 Sol (OpenAI) · AA 47.6API $2/$10 per 1M tokens on OpenRouter · listed September 22, 2026
GPT-5.6 Sol (OpenAI) · AA 47Released July 9, 2026 (rolling out) · API $4/$20 per 1M tokens · up to 750 tok/s on Cerebras
Claude Fable 5 (Anthropic) · AA 49.6Claude Pro / Max plans (usage credits since July 7) · API $10/$50 per 1M tokens

Open Muse's official app ↗ Open in the WhichAI app Not sure? Take the 30-second finder

Artificial Analysis Intelligence Index, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 14, 2026. 209 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (the Ranking chapter and About > Methodology).