o
Gemini 3.5 Flash vs GPT-4o
2026 Stored listed rates & illustrative token-cost comparison
GPT-4o
Deprecated
Deprecated endpoints may still be callable. Migrate before retirement.
Illustrative Listed-Rate Difference
Gemini 3.5 Flash about 27% lower
1M input + 200K output tokens; not a monthly bill
📌 Executive Summary (TL;DR):Under a standard baseline of 1M input + 200K output tokens, Gemini 3.5 Flash lists approximately 27% lower than GPT-4o. For high-throughput production workloads, Gemini 3.5 Flash delivers superior unit economics; model your specific monthly workload below before migrating.
💡 10M Monthly Token Workload Simulation
Simulating a production workload (10M input + 2M output tokens): Gemini 3.5 Flash listed rate totals ~$33.00, while GPT-4o totals ~$45.00. Switching to Gemini 3.5 Flash yields ~$12.00/mo in raw token savings.
Metric
Gemini 3.5 Flash (openrouter)
GPT-4o (OpenAI)
Input listed rate
$1.50 / 1M Tokens
$2.50 / 1M Tokens
Output listed rate
$9.00 / 1M Tokens
$10.00 / 1M Tokens
Cached Input rate
$0.15 / 1M Tokens
$1.25 / 1M Tokens
Context Window
1049K Tokens
128K Tokens
Modality
llm
llm
🏆Related AI Scenario Leaderboards
Compare model standings across production scenarios weighted by editorial picks, public adoption, and verified price signals.
Want to map listed prices to your usage?
Enter token volume in the free estimator for a directional cost comparison. Validate quality, latency, and provider terms before migrating.