Updated March 26, 2026· Based on independent benchmark data
Both Google: Gemini 3.5 Flash and GPT-5.3 Codex (xhigh) are competitive AI models. See the detailed comparison below to find which best fits your needs.
| Metric | Google: Gemini 3.5 Flash | GPT-5.3 Codex (xhigh) |
|---|---|---|
| Intelligence Score | N/A | 54.0 |
| Coding Score | N/A | 53.1 |
| Math Score | N/A | N/A |
| Speed (tok/s) | N/A | 72 tok/s |
| Latency (TTFT) | N/A | 83.91s |
| Input Price / 1M tokens | $1.50 | $1.75 |
| Output Price / 1M tokens | $9.00 | $14 |
| Context Window | 1.0M | N/A |
| Max Output Tokens | 66K | N/A |
| Input Modalities | Text + Image + Video + File + Audio | Text |
| Output Modalities |
Google: Gemini 3.5 Flash is more affordable at $1.50/1M input tokens ($9.00/1M output), while GPT-5.3 Codex (xhigh) costs $1.75/1M input ($14/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, Google: Gemini 3.5 Flash would cost approximately $9.00/month vs $10.50/month for GPT-5.3 Codex (xhigh) in input costs alone.
Google: Gemini 3.5 Flash is cheaper at $1.50/1M input tokens vs $1.75/1M for GPT-5.3 Codex (xhigh).
Yes, Google: Gemini 3.5 Flash supports image input. GPT-5.3 Codex (xhigh) does not support image input.
Data last synced: March 26, 2026
| Text |
| Text |
| Free Tier | No | No |