Muse Spark 1.2 vs Gemini 3.5 Flash
Muse Spark 1.2 comes out ahead, 72 to 69 on our weighted score, and it is the cheaper option too.
- Our pick
MetaMuse Spark 1.2
72/100- ECI155.0
- Price$1.25 / $4.25
- Context1.05M
GoogleGemini 3.5 Flash
69/100- ECI154.5
- Price$1.50 / $9.00
- Context1.05M
Add a model
Make it a three-way comparison.
Muse Spark 1.2 is our pick
Muse Spark 1.2 is the better all-round choice, scoring 72/100 against Gemini 3.5 Flash (69). It leads on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityMuse Spark 1.2Capabilities Index (ECI): Muse Spark 1.2 155.0 · Gemini 3.5 Flash 154.5
- Lowest priceMuse Spark 1.2Muse Spark 1.2 $2.00 · Gemini 3.5 Flash $3.38 per 1M tokens (3:1 blend)
- Longest contextAbout the sameMuse Spark 1.2 1,048,576 · Gemini 3.5 Flash 1,048,576 tokens
- Widest inputsSame inputsMuse Spark 1.2: Text, Images, PDFs, Audio, Video · Gemini 3.5 Flash: Text, Images, PDFs, Audio, Video
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Muse Spark 1.2 | Gemini 3.5 Flash |
|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 84 | 84 |
| Price | 25% | 36 | 25 |
| Inputs & features | 15% | 100 | 100 |
| Context window | 10% | 61 | 61 |
| Overall | 100% | 72/100 | 69/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Muse Spark 1.2Meta | Gemini 3.5 FlashGoogle |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | 155.0 (best) | 154.5 |
| ECI rank | #30 of 148 (best) | #33 of 148 |
| GPQA DiamondGraduate-level science questions | — | 92.8% |
| FrontierMath Tiers 1–3Research-level mathematics | — | 62.8% |
| OTIS Mock AIME 2024–2025Competition mathematics | — | 95.6% |
| SWE-bench VerifiedFixing real GitHub issues | — | 79.3% |
| SimpleQA VerifiedShort factual questions | 60.3% | 66.2% (best) |
| Price per million tokens | ||
| Input | $1.25 (best) | $1.50 |
| Output | $4.25 (best) | $9.00 |
| Cached input | $0.15 | $0.15 |
| Blended (3:1) | $2.00 (best) | $3.38 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Meta API | Official Google API |
| Limits | ||
| Context window | 1,048,576 tokens | 1,048,576 tokens |
| Max output | 131,072 tokens (best) | 65,536 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | Yes | Yes |
| Audio | Yes | Yes |
| Video | Yes | Yes |
| Reasoning | Yesminimal · low · medium · high · xhigh | Yesminimal · low · medium · high |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | muse-spark-1.2 | gemini-3.5-flash |
| API providers | 15 | 32 (best) |
| Released | Aug 5, 2026 | May 19, 2026 |
| Knowledge cutoff | — | Jan 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Muse Spark 1.2$21.00
- Gemini 3.5 Flash$33.00
Which should you choose?
Which is better: Muse Spark 1.2 or Gemini 3.5 Flash?
Muse Spark 1.2 is the better all-round choice, scoring 72/100 against Gemini 3.5 Flash (69). It leads on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, Muse Spark 1.2 or Gemini 3.5 Flash?
Muse Spark 1.2 is cheaper at $1.25 input / $4.25 output per million tokens (official Meta API price). Gemini 3.5 Flash costs $1.50 input / $9.00 output per million tokens (official Google API price). At a typical mix of three input tokens to one output token, that is $2.00 per million tokens for Muse Spark 1.2 versus $3.38 for Gemini 3.5 Flash (1.7× as much).
Which scores higher on benchmarks?
Muse Spark 1.2 scores higher on the Capabilities Index (ECI): Muse Spark 1.2 155.0 (#30 of 148) and Gemini 3.5 Flash 154.5 (#33 of 148). The confidence ranges of the top two overlap (152.8–157.5 vs 152.5–156.6), so treat the gap as small. On individual benchmarks: SimpleQA Verified — Gemini 3.5 Flash 66.2%, Muse Spark 1.2 60.3%.
Which is better for coding?
There are no published SWE-bench Verified results for Muse Spark 1.2 yet, so there is no like-for-like coding score. On overall capability, Muse Spark 1.2 leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.
Which has the bigger context window?
Muse Spark 1.2 and Gemini 3.5 Flash share the same 1,048,576-token context window. Maximum output per response: Muse Spark 1.2 up to 131,072, Gemini 3.5 Flash up to 65,536 tokens.
Which can read images, PDFs, audio or video?
Muse Spark 1.2 accepts text, images, PDFs, audio and video; Gemini 3.5 Flash accepts text, images, PDFs, audio and video. They handle the same number of input types.
Are any of these open source?
No. Muse Spark 1.2 and Gemini 3.5 Flash are proprietary and only available through APIs and apps.
Which is newer?
Muse Spark 1.2 is the newest, released Aug 5, 2026. Gemini 3.5 Flash came out May 19, 2026. Knowledge cutoff: Gemini 3.5 Flash Jan 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
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