API cost decision in 10 seconds

Solar Pro 3 vs 🔥Gemini 3 Flash Preview

Pick Solar Pro 3 for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Solar Pro 3 for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Solar Pro 3 is estimated at $0.45 vs $2 for Gemini 3 Flash Preview, saving $1.55 (77.5% lower).

Cost-first pickSolar Pro 3
Context-first pickGemini 3 Flash Preview
Sample savings$1.5577.5%
10x traffic gap$15.5

Gemini 3 Flash Preview has more context, but Solar Pro 3 saves $1.55 on the standard workload. At 10x that traffic, the same price gap is about $15.5. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Solar Pro 3 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickSolar Pro 3Gemini 3 Flash Preview
Input-heavy / RAG 5M input + 500K output Solar Pro 3 $1.05 $4
Balanced workload 1M input + 1M output Solar Pro 3 $0.75 $3.5
Output-heavy chatbot 1M input + 5M output Solar Pro 3 $3.15 $15.5
Cheaper inputSolar Pro 3$0.15 vs $0.5 / 1M
Cheaper outputSolar Pro 3$0.6 vs $3 / 1M
Larger contextGemini 3 Flash Preview128K vs 1.05M
Sample workloadSolar Pro 3$0.45 vs $2

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Solar Pro 3Calculating…Estimated API cost
Gemini 3 Flash PreviewCalculating…Estimated API cost
Cheaper for this workloadCalculating…Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Solar Pro 3 has the lower input price, Solar Pro 3 has the lower output price, and Gemini 3 Flash Preview offers the larger context window.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.45 for Solar Pro 3 and $2 for Gemini 3 Flash Preview.

Best Fit

Choose Solar Pro 3 when you care most about lower input-token price, and lower output-token price.

Choose Gemini 3 Flash Preview when you care most about larger context window.

Head-to-Head Specs
FeatureSolar Pro 3
(Upstage)		🔥Gemini 3 Flash Preview
(Google)
Input Price
prompt tokens per 1M		$0.15$0.5
Completion Price
per 1M tokens		$0.6$3
Sample Workload Cost
1M input + 500K output		$0.45$2
Context Window128K1.05M
Release Date2026-01-272025-12-17
Popularity#7
Solar Pro 3

Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performance while maintaining computational efficiency. Optimized...

Gemini 3 Flash Preview

Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionSolar Pro 3On the standard 1M input plus 500K output workload, Solar Pro 3 is estimated at $0.45 vs $2 for Gemini 3 Flash Preview, saving $1.55 (77.5% lower).
High-volume input processingSolar Pro 3Lower prompt-token price matters most when prompts or retrieved passages dominate the bill.
Long responses and chatbotsSolar Pro 3Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGemini 3 Flash PreviewA larger context window leaves more room for retrieved passages and source files.