Gemini 3.1 Pro Preview alternatives
Same input types and capabilities, at least half the context window · USD per 1M tokens
We found 10 models that can replace Gemini 3.1 Pro Preview ($2.00 input / $12.00 output per million tokens). 10 of them are cheaper. The cheapest, Muse Spark 1.2 Contributor, costs 97.2% less on a blended 3:1 basis: $1.40 instead of $44.00 per month for a chatbot workload (10M input / 2M output tokens).
// 10 alternatives
| model | lab | in $/1M | out $/1M | ctx | vs Gemini 3.1 Pro Preview | chatbot / mo |
|---|---|---|---|---|---|---|
| Muse Spark 1.2 Contributor | Meta | $0.10 | $0.20 | 1.05M | −97.2% | $1.40 |
| Muse Spark 1.3 Contributor | Meta | $0.10 | $0.20 | 1.05M | −97.2% | $1.40 |
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | 1.05M | −96.1% | $1.80 | |
| Gemini 3.1 Flash Lite | $0.25 | $1.50 | 1.05M | −87.5% | $5.50 | |
| Gemini 2.5 Flash | $0.30 | $2.50 | 1.05M | −81.1% | $8.00 | |
| Gemini 3.5 Flash Lite | $0.30 | $2.50 | 1.05M | −81.1% | $8.00 | |
| Gemini 3 Flash Preview | $0.50 | $3.00 | 1.05M | −75% | $11.00 | |
| Gemini 3.6 Flash | $0.75 | $3.75 | 1.05M | −66.7% | $15.00 | |
| Gemini 3.7 Flash | $0.75 | $3.75 | 1.05M | −66.7% | $15.00 | |
| Gemini 3.8 Flash | $0.75 | $3.75 | 1.05M | −66.7% | $15.00 |
// how we pick alternatives
An alternative must accept every input type Gemini 3.1 Pro Preview accepts (text, image, video, audio, pdf), offer the same tool-calling and reasoning support, and have at least half of its 1.05M-token context window. Models are sorted by blended price (3 × input + output) / 4, using base-tier list prices refreshed daily.