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chat comparison

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gpt-5.3-codex-sparkvsgpt-5.6-terra

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Compare the things that matter before you build: current price, capabilities, and observed LLM7 usage.

Current pricing

See the cost difference clearly

Directly comparable

gpt-5.3-codex-spark

Input $0.36 USD · Output $2.81 USD / 1M tokens

gpt-5.6-terra

Input $0.50 USD · Output $2.00 USD / 1M tokens

Minimum request: $0.0002 USD

What's different

Only capabilities that differ between these models are listed. Green highlights the broader supported option or larger context window.

Reasoning

gpt-5.3-codex-sparkBetter fit

Supported

gpt-5.6-terra

Not 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.

1M tokens
10,000 tokens
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.

1M tokens
10,000 tokens
01M

Input estimate

$0.005

Output estimate

$0.005

Estimated total

$0.01

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