Muse Spark 1.3 benchmarks, pricing and specs
Muse Spark 1.3 is a Meta model released on September 2, 2026 that takes text, image, audio and video input and produces text. It costs $1.25 per 1M input tokens and $4.25 per 1M output tokens and accepts up to 1,048,576 tokens of context. It scores 1494 Elo on Arena Text, #5 of 39 current models (Arena, measured October 8, 2026).
- Per 1M input tokens
- $1.25
- Per 1M output tokens
- $4.25
- Context window
- 1.05M
- Arena Text
- 1494 Elo · #5/39
Data verified October 12, 2026 · Dataset 2026-10-12
Key facts
- Provider
- Meta
- Model family
- Muse Spark
- Release date
- September 2, 2026
- Status
- Current
- Access
- API only
- API model id
- Not reported
- Context window
- 1,048,576 tokens
- Max output
- Not reported
- Input
- text, image, audio, video
- Output
- text
- Task families
- text, multimodal
- Declared capabilities
- reasoning
Muse Spark 1.3 pricing
It is the #12 cheapest of 37 current text models priced per 1M input tokens.
Independent benchmark results
Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. Meta's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.
| Benchmark | Score | Rank | Measured | Source |
|---|---|---|---|---|
| Arena Text | 1494 Elo | #5 of 39 | October 8, 2026 | Arena · 2026-10-12 |
| FrontierMath Tiers 1-3 (v2) | 74.4% | #18 of 37 | October 12, 2026 | Epoch AI · 2026-10-12 |
Strengths, cautions and best uses
Strengths
- Meta tunes it for agentic workflows (multi-step tool use, browser control, and long-horizon tasks) with a 1,048,576-token context window
- Meta reports it finishing coding work with roughly 20% fewer tool calls and 25% fewer tokens than Muse Spark 1.2, which compounds with the low token price
- Behavioural changes aimed at real use: it asks clarifying questions on ambiguous prompts and confirms before consequential actions
Cautions
- Meta’s own documentation states audio understanding is not fully supported and response quality may be degraded on requests containing audio
- The much cheaper contributor endpoint (about $0.10 / $0.20 per million) is priced that way in exchange for Meta training on your traffic. The standard tier is the rate recorded here.
- Meta’s scorecard has it trailing Claude Opus 5 on every broader agent-workflow benchmark it published, including GDPVal-AA v2, despite winning the coding rows
Best for
- Tool-heavy agent loops where fewer calls per task matters as much as the per-token rate
- Coding agents at volume, where its coding scores and low price line up
Alternatives to Muse Spark 1.3
The closest current textmodels by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.
Cheaper, same or higher score
Gemini 3.8 Flash
- 40% cheaper per 1M input tokens, $0.75 vs $1.25
- 3 points higher on Arena Text, 1497 vs 1494
- From Google
Grok 4.20
- Same price per 1M input tokens, $1.25
- 22 points lower on Arena Text, 1472 vs 1494
- From xAI
Grok 4.3
- Same price per 1M input tokens, $1.25
- 52 points lower on Arena Text, 1442 vs 1494
- From xAI
Mistral Large 4
- 9% more per 1M input tokens, $1.36 vs $1.25
- 65 points lower on Arena Text, 1429 vs 1494
- From Mistral AI
Compare Muse Spark 1.3 with
Muse Spark 1.3 FAQ
How much does Muse Spark 1.3 cost?
Muse Spark 1.3 costs $1.25 per 1M input tokens and $4.25 per 1M output tokens at the standard tier. It is the #12 cheapest of 37 current text models priced per 1M input tokens. Source: OpenRouter, verified September 9, 2026.
What is the context window of Muse Spark 1.3?
Muse Spark 1.3 accepts up to 1,048,576 tokens of context. That ranks #10 of 44 current text models by context length.
How does Muse Spark 1.3 score on independent benchmarks?
Muse Spark 1.3 scores 1494 Elo on Arena Text, #5 of 39 current models (Arena, measured October 8, 2026) and 74.4% on FrontierMath Tiers 1-3 (v2), #18 of 37 current models (Epoch AI, measured October 12, 2026). These are independent evaluations, not Meta's own launch figures.
Is Muse Spark 1.3 open source or API only?
Muse Spark 1.3 is available through Meta's API only; its weights are not published.
What are the best alternatives to Muse Spark 1.3?
The closest current alternatives by price and measured performance are Gemini 3.8 Flash (40% cheaper per 1M input tokens, $0.75 vs $1.25), Grok 4.20 (same price per 1M input tokens, $1.25), Grok 4.3 (same price per 1M input tokens, $1.25) and Mistral Large 4 (9% more per 1M input tokens, $1.36 vs $1.25).
Sources
- Meta Model API model list · Meta · official · verified September 9, 2026
- OpenRouter models API catalogue · OpenRouter · independent · verified September 9, 2026
- Epoch AI Benchmarking Hub data (benchmark_data.zip) · Epoch AI · independent · verified October 12, 2026 · CC-BY-4.0
- Arena leaderboard dataset (lmarena-ai/leaderboard-dataset) · Arena · independent · verified October 12, 2026 · CC-BY-4.0
Cite this page
Van Data Team. "Muse Spark 1.3 Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-10-12. https://vandatateam.com/ai-model-benchmarks/muse-spark-1-3
Reuse the data: JSON · CSV · or explore every model in the AI model benchmark comparison.
Production evaluation
Deciding whether Muse Spark 1.3 fits your workload?
Public benchmarks narrow the shortlist. We test the finalists on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- Evaluation cases and acceptance thresholds tied to real work
- Model routing, fallbacks and cost controls