Gemini 3.1 Pro Preview Paid vs 
Muse Spark 1.2 Contributor Paid
Gemini 3.1 Pro Preview vs Muse Spark 1.2 Contributor compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Gemini 3.1 Pro Preview — full profile › · Muse Spark 1.2 Contributor — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$12 /M outputManaged API (no infra to run)
$0.2 /M outputManaged API (no infra to run)
Gemini 3.1 Pro Preview vs Muse Spark 1.2 Contributor specs
| Spec | Gemini 3.1 Pro Preview | Muse Spark 1.2 Contributor | Winner |
|---|---|---|---|
| Maker | Meta | – | |
| Type | Proprietary | Proprietary | – |
| Context window | 1M tokens | 1M tokens | = Tie |
| Input price | $2/M | $0.1/M | |
| Output price | $12/M | $0.2/M | |
| Vision / multimodal | Yes | Yes | = Tie |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
Muse Spark 1.2 Contributor is ~60× cheaper than Gemini 3.1 Pro Preview on output tokens ($0.2 vs $12 per M tokens).
- You want frontier performance through a managed API
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | Gemini 3.1 Pro Preview | Muse Spark 1.2 Contributor |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✓ |
Benchmarks: Gemini 3.1 Pro Preview vs Muse Spark 1.2 Contributor
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Gemini 3.1 Pro Preview and Muse Spark 1.2 Contributor score
| Criterion | Gemini 3.1 Pro Preview | Muse Spark 1.2 Contributor |
|---|---|---|
| Cost-efficiency | 3.5 | 5.0 |
| Context window | 5.0 | 5.0 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 5.0 | 5.0 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
Gemini 3.1 Pro Preview Paid
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation.
Muse Spark 1.2 Contributor Paid
Muse Spark 1.2 contributor tier is a reasoning model from Meta designed for developers who want to start building at an even lower cost. It’s meaningfully cheaper than Muse Spark...
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Gemini 3.1 Pro Preview vs Muse Spark 1.2 Contributor — which is cheaper?
Muse Spark 1.2 Contributor is cheaper on output ($0.2/M vs $12/M).
Which has the larger context window?
Gemini 3.1 Pro Preview offers the larger context window (1M tokens).
Gemini 3.1 Pro Preview vs Muse Spark 1.2 Contributor — which should I pick in 2026?
Choose Muse Spark 1.2 Contributor for the lower output price ($0.2/M vs $12/M). Choose Gemini 3.1 Pro Preview if you need the larger 1M context window.
People also compare
Explore more open-source AI
Browse the full open-source model leaderboard, thousands of tools and live benchmarks — all in one place.
Open the leaderboard →