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chat comparison

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claude-opus-4-8vsgpt-5.3-codex-spark

OpenAI logo

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

Current pricing

See the cost difference clearly

Directly comparable

claude-opus-4-8

Input $2.25 USD · Output $12.19 USD / 1M tokens

Minimum request: $0.002 USD

gpt-5.3-codex-spark

Input $0.36 USD · Output $2.81 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

claude-opus-4-8Better fit

1,000,000 tokens

gpt-5.3-codex-spark

400,000 tokens

Input formats

claude-opus-4-8

text, image

gpt-5.3-codex-spark

text

Vision

claude-opus-4-8Better fit

Supported

gpt-5.3-codex-spark

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

$0.0225

Output estimate

$0.030475

Estimated total

$0.052975

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

Quick take

  • claude-opus-4-8 has a larger context window.
  • claude-opus-4-8 supports image input while the other model does not.

Keep exploring