Muse Spark 1.3: Benchmarks, Pricing & Comparison

Profile

Specifications and access

Published information about this model. Existing estimates are explicitly labeled.

Dated documentation and model-card observations. Provider limits, native context and extended context can differ. Configuration notes retain the source wording.

Specification	Value and source
Weights	ProprietarySource
Access	APISource
Context window	1,048,576 tokensSource
Notes	Multimodal reasoning model for long-running agentic and coding tasks. Meta reports about 20% fewer tool calls and about 25% fewer tokens than Muse Spark 1.2; parameter count is not published.Source
Release	2026-09-02Source
API model ID	Muse Spark 1.3Source
Reasoning mode	max reasoningSource
Tool-calling efficiency	~20% fewer tool calls vs Muse Spark 1.2Source
Token efficiency	~25% fewer tokens vs Muse Spark 1.2Source
Availability	Muse Code, Meta Model APISource

Our model tests

Our tests

Compare how the models respond to the same prompt. Each test shows the latest attempt, with no subsequent fixes to the generated code. Earlier runs remain available in the test details. These results do not contribute to an overall score.

Pelican on a bicycle

A community classic for free-form SVG drawing.

Muse Spark 1.3

Reasoning (requested): high

Current attempt

Run date: 2 Oct 2026
API provider: openrouter
Requested API model: meta/muse-spark-1.3
API model reported in response: meta/muse-spark-1.3
Reasoning setting: high
Pinned endpoint: Meta | meta/muse-spark-1.3-20260902
Temperature: Provider default
Token limit including reasoning: 8,192 tokens
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating
Response time: 87.9 s

Visually reviewed. This individual test does not establish overall model quality.

Earlier attempts (2)

1 Oct 2026Output withheld for safetyReasoning setting: high
7 Sept 2026API request failedReasoning setting: high

Prompt and test conditions

Generate an SVG of a pelican riding a bicycle

Token limit including reasoning: 8,192 tokens

Task origin (Simon Willison)

Popularity

49.7 / 100

Pricing

Published prices

Hosting-market price: the median of 1 OpenRouter endpoints from 1 providers (representative: Meta), observed on October 5, 2026. Cache prices differ by provider and are not shown.

API input: $1.25 per 1M tokensSource
API output: $4.25 per 1M tokensSource
Cache read: $0.15 per 1M tokensSource

Head-to-head comparisons

Compare this model

Each matchup compares this model with exactly one other model from the same category.

Muse Spark 1.3 vs. Claude Opus 5.5

Muse Spark 1.3 vs. Claude Sonnet 5.5

Muse Spark 1.3 vs. Claude Fable 5.1

Muse Spark 1.3 vs. Claude Mythos 5.1

Muse Spark 1.3 vs. Claude Opus 5

Muse Spark 1.3 vs. Claude Fable 5

Show all comparisons (49)

Muse Spark 1.3 vs. Claude Sonnet 5

Muse Spark 1.3 vs. Claude Mythos 5

Muse Spark 1.3 vs. Claude Opus 4.8

Muse Spark 1.3 vs. Claude Opus 4.7

Muse Spark 1.3 vs. Claude Opus 4.6

Muse Spark 1.3 vs. Claude Opus 4.5

Muse Spark 1.3 vs. Claude Sonnet 4.6

Muse Spark 1.3 vs. Claude Sonnet 4.5

Muse Spark 1.3 vs. Claude Haiku 4.5

Muse Spark 1.3 vs. GPT-6.1 Sol

Muse Spark 1.3 vs. GPT-6 Astra

Muse Spark 1.3 vs. GPT-6 Sol

Muse Spark 1.3 vs. GPT-6 Luna

Muse Spark 1.3 vs. GPT-5.6 Sol

Muse Spark 1.3 vs. GPT-5.6 Terra

Muse Spark 1.3 vs. GPT-5.6 Luna

Muse Spark 1.3 vs. GPT-5.5

Muse Spark 1.3 vs. GPT-5.4

Muse Spark 1.3 vs. GPT-5.4 mini

Muse Spark 1.3 vs. Gemini 3.8 Flash

Muse Spark 1.3 vs. Gemini 3.7 Flash

Muse Spark 1.3 vs. Gemini 3.6 Flash

Muse Spark 1.3 vs. Gemini 3.5 Flash

Muse Spark 1.3 vs. Gemini 3.1 Pro Preview

Muse Spark 1.3 vs. Gemini 3.5 Flash-Lite

Muse Spark 1.3 vs. Grok 4.7

Muse Spark 1.3 vs. Grok 4.6

Muse Spark 1.3 vs. Grok 4.5

Muse Spark 1.3 vs. Grok 4.3

Muse Spark 1.3 vs. DeepSeek-V4-Pro

Muse Spark 1.3 vs. DeepSeek-V4-Flash

Muse Spark 1.3 vs. DeepSeek-V4.1-Flash

Muse Spark 1.3 vs. Kimi K3

Muse Spark 1.3 vs. Kimi K2.6

Muse Spark 1.3 vs. GLM-5.3-Flash

Muse Spark 1.3 vs. GLM-5.3

Muse Spark 1.3 vs. GLM-5.2

Muse Spark 1.3 vs. GLM-5.1

Muse Spark 1.3 vs. Qwen 3.8 Max 0902

Muse Spark 1.3 vs. Mistral Large 3

Muse Spark 1.3 vs. Mistral Medium 3.5

Muse Spark 1.3 vs. MiMo-V2.5

Muse Spark 1.3 vs. MiMo-V2.5-Pro

Model generations

Predecessor and successor

Every relationship names its kind, its qualification and the dated source it rests on.

Evidence

Sources and data date

Every statement links to its underlying documentation or leaderboard.

Type	Evidence and data date
Speed	Meta, Max effort. Output speed after the first streaming chunk, not total response time. Retrieved September 23, 2026. Source: Artificial Analysis · Speed (Artificial Analysis)Speed measurement methodology
Price	Base API prices without caching or batch discounts. Higher context tiers and other rates are listed under Costs. Source: Pricing · Context window data
Research status	Research date September 8, 2026. 1 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication.
Not found in the inspected sources	license Original wording The checked announcement does not state a model license.
Not found in the inspected sources	parameters-billions Original wording No parameter count in the checked announcement.
Not found in the inspected sources	context-tokens Original wording No context window in the checked announcement.
Not found in the inspected sources	knowledge-cutoff Original wording No knowledge cutoff in the checked announcement.
Not found in the inspected sources	profile-benchmarks Original wording No labeled benchmark table or exact score was found in the checked announcement; relative efficiency claims are recorded as facts.
Additional source	Model metadata (retrieved September 8, 2026) · Meta AI Research, Introducing Muse Spark 1.3 · Editorial description reviewed October 2, 2026
Additional source	OpenRouter: Popularity index (derived), CC BY 4.0
Additional source	Vercel AI Gateway: Popularity index (derived), CC BY 4.0
Additional source	Creative Commons Attribution 4.0