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GPT-3.5 Turbo 16k 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
GPT-3.5 Turbo 16k about 16% lower
1M input + 200K output tokens; not a monthly bill
📌 Executive Summary (TL;DR):Under a standard baseline of 1M input + 200K output tokens, GPT-3.5 Turbo 16k lists approximately 16% lower than GPT-4o. For high-throughput production workloads, GPT-3.5 Turbo 16k 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): GPT-3.5 Turbo 16k listed rate totals ~$38.00, while GPT-4o totals ~$45.00. Switching to GPT-3.5 Turbo 16k yields ~$7.00/mo in raw token savings.
Metric
GPT-3.5 Turbo 16k (openrouter)
GPT-4o (OpenAI)
Input listed rate
$3.00 / 1M Tokens
$2.50 / 1M Tokens
Output listed rate
$4.00 / 1M Tokens
$10.00 / 1M Tokens
Cached Input rate
—
$1.25 / 1M Tokens
Context Window
16K Tokens
128K Tokens
Modality
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