gpt-5.3-codex-spark
Input $0.36 USD · Output $2.81 USD / 1M tokens
chat comparison
gpt-5.3-codex-sparkvsgpt-5.5
Compare the things that matter before you build: current price, capabilities, and observed LLM7 usage.
Current pricing
See the cost difference clearly
gpt-5.5
Input $0.55 USD · Output $3.31 USD / 1M tokens
Minimum request: $0.0001 USD
What's different
Only capabilities that differ between these models are listed. Green highlights the broader supported option or larger context window.
Context window
gpt-5.3-codex-spark
400,000 tokens
gpt-5.5Better fit
1,050,000 tokens
Input formats
gpt-5.3-codex-spark
text
gpt-5.5
text, image
Vision
gpt-5.3-codex-spark
Not supported
gpt-5.5Better fit
Supported
Estimate your workload
Try the same request volume against both public price lists.
Cost calculator
Adjust the volume to see an instant estimate at the current public price.
01M
Input estimate
$0.0036
Output estimate
$0.007025
Estimated total
$0.010625
Cost calculator
Adjust the volume to see an instant estimate at the current public price.
01M
Input estimate
$0.0055
Output estimate
$0.008275
Estimated total
$0.013775
Quick take
- gpt-5.5 has a larger context window.
- gpt-5.5 supports image input while the other model does not.