Gemini 3 Flash Preview vs Grok 4.5
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Gemini 3 Flash Preview is 56.3% cheaper on blended cost ($1.75 vs $4.00/Mtok)
|
Gby Google
|
Xby xAI
|
|
|---|---|---|
| Overview | ||
| Status | Preview flagship | Current flagship |
| Released | Dec 17, 2025 | Jul 8, 2026 |
| Pricing per million tokens | ||
| Input | $0.500/Mtok | $2.00/Mtok |
| Output | $3.00/Mtok | $6.00/Mtok |
| Blended avg | $1.75/Mtok | $4.00/Mtok |
| Cached input | $0.050/Mtok | — |
| Specifications | ||
| Context window | 1M tokens | 500K tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimageaudiovideo
|
textimage
|
| Providers | ||
| Available from |
Google — $0.500/$3.00/Mtok
|
xAI — $2.00/$6.00/Mtok
|
Cost at scale — 1M tokens (50/50 input/output)
| Volume | Gemini 3 Flash Preview | Grok 4.5 | Savings |
|---|---|---|---|
| 1M tokens | $1.75 | $4 | $2.25 (56.3%) |
| 10M tokens | $17.5 | $40 | $22.5 (56.3%) |
| 100M tokens | $175 | $400 | $225 (56.3%) |
| 1000M tokens | $1750 | $4000 | $2250 (56.3%) |
Try Gemini 3 Flash Preview on Google
The cheaper option here — Gemini 3 Flash Preview costs $1.75/Mtok blended on Google.
Summary
Gemini 3 Flash Preview by Google costs $0.500/Mtok input and $3.00/Mtok output, with a 1M-token context window. It supports text, image, audio, video input.
Grok 4.5 by xAI costs $2.00/Mtok input and $6.00/Mtok output, with a 500K-token context window. It supports text, image input.
On a blended cost basis, Gemini 3 Flash Preview is 56.3% cheaper than Grok 4.5. It also has a larger context window.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.