GPT-5.3 Codex vs GPT-6 Astra: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
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
OpenAI
GPT-6 Astra
Pricing (per 1M tokens)
Input$10.00
Output$50.00
Cached Input$1.00
Batch Input$5.00
Batch Output$25.00
Context & Output
Context Window1M tokens
Max Output128K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
GPT-5.3 Codex
82.5% cheaper
Cheaper Output Price
GPT-5.3 Codex
72.0% cheaper
Larger Context Window
GPT-6 Astra
+600K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
GPT-5.3 Codex
$15.75
$1.75/1M input + $14.00/1M output
GPT-6 Astra
$60.00
$10.00/1M input + $50.00/1M output
GPT-5.3 Codex is 73.8% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, GPT-5.3 Codex or GPT-6 Astra?
For input tokens, GPT-5.3 Codex is cheaper at $1.75 per 1M tokens. For output tokens, GPT-5.3 Codex is cheaper at $14.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of GPT-5.3 Codex vs GPT-6 Astra?
GPT-5.3 Codex has a context window of 400K tokens, while GPT-6 Astra has 1M tokens. GPT-6 Astra supports a larger context window of 1M tokens, which is beneficial for processing longer documents.
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