Gemini 2.5 Pro vs GPT-5.3 Codex: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
Gemini 2.5 Pro
Pricing (per 1M tokens)
Input$1.25
Output$10.00
Cached Input$0.1250
Batch Input$0.6250
Batch Output$5.00
Context & Output
Context Window1M tokens
Max Output65.5K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
OpenAI
GPT-5.3 Codex
Pricing (per 1M tokens)
Input$1.75
Output$14.00
Cached Input$0.1750
Context & Output
Context Window400K tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Gemini 2.5 Pro
28.6% cheaper
Cheaper Output Price
Gemini 2.5 Pro
28.6% cheaper
Larger Context Window
Gemini 2.5 Pro
+600K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Gemini 2.5 Pro
$11.25
$1.25/1M input + $10.00/1M output
GPT-5.3 Codex
$15.75
$1.75/1M input + $14.00/1M output
Gemini 2.5 Pro is 28.6% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Pro or GPT-5.3 Codex?
For input tokens, Gemini 2.5 Pro is cheaper at $1.25 per 1M tokens. For output tokens, Gemini 2.5 Pro is cheaper at $10.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Gemini 2.5 Pro vs GPT-5.3 Codex?
Gemini 2.5 Pro has a context window of 1M tokens, while GPT-5.3 Codex has 400K tokens. Gemini 2.5 Pro supports a larger context window of 1M tokens, which is beneficial for processing longer documents.
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