gpt-5.3-codex-spark
Input $0.36 USD · Output $2.81 USD / 1M tokens
chat comparison
gpt-5.3-codex-sparkvsgpt-oss:20b
Compare the things that matter before you build: current price, capabilities, and observed LLM7 usage.
Current pricing
See the cost difference clearly
gpt-oss:20b
Input $0.04 USD · Output $0.06 USD / 1M tokens
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-sparkBetter fit
400,000 tokens
gpt-oss:20b
128,000 tokens
Reasoning
gpt-5.3-codex-sparkBetter fit
Supported
gpt-oss:20b
Not supported
Observed usage comparison
A 30-day LLM7 snapshot, not a global model benchmark.
Requests handled
gpt-5.3-codex-spark
52
gpt-oss:20b
474
Observed success rate
gpt-5.3-codex-spark
100%
gpt-oss:20b
99.79%
Average API latency
gpt-5.3-codex-spark
1,363.69 ms
gpt-oss:20b
4,323.41 ms
P95 API latency
gpt-5.3-codex-spark
5,000 ms
gpt-oss:20b
30,000 ms
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
$0.0004
Output estimate
$0.00015
Estimated total
$0.00055
Quick take
- gpt-5.3-codex-spark has a larger context window.
- gpt-5.3-codex-spark recorded a lower observed p95 API latency on LLM7 during this period.