token.app › Compare › GPT-5.3-Codex vs Gemini 3.7 Flash
GPT-5.3-Codex vs Gemini 3.7 Flash
Gemini 3.7 Flash is 3.2× cheaper per token on a blended 3:1 basis. Gemini 3.7 Flash accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5.3-Codex | Gemini 3.7 Flash | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $1.75 | $0.750 |
| Output $/1M | $14.00 | $3.75 |
| Blended $/1M | $4.81 | $1.50 |
| Context window | 400K | 1.0M |
| Max output | 128K | 66K |
| Released | Feb 2026 | Aug 2026 |
| Licence | Proprietary | Proprietary |
Choose GPT-5.3-Codex if…
- No clear advantage on the data we hold.
Choose Gemini 3.7 Flash if…
- Costs less per token — $1.50 vs $4.81 blended
- Larger context window (1.0M)
- Newer model (released Aug 2026)
FAQ
Which is better, GPT-5.3-Codex or Gemini 3.7 Flash?
We do not hold independently-run benchmark scores covering both GPT-5.3-Codex and Gemini 3.7 Flash, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.3-Codex cheaper than Gemini 3.7 Flash?
Gemini 3.7 Flash is cheaper: $1.50 versus $4.81 per million tokens blended at 3:1 input:output. Input alone: $1.75 vs $0.750. Output alone: $14.00 vs $3.75.
What context windows do GPT-5.3-Codex and Gemini 3.7 Flash have?
GPT-5.3-Codex: 400,000 tokens. Gemini 3.7 Flash: 1,048,576 tokens.
Who makes GPT-5.3-Codex and Gemini 3.7 Flash?
GPT-5.3-Codex is made by OpenAI. Gemini 3.7 Flash is made by Google.