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chat comparison

Anthropic logo

claude-opus-5vsgpt-oss:20b

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-5

Input $2.50 USD · Output $12.50 USD / 1M tokens

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

claude-opus-5Better fit

1,000,000 tokens

gpt-oss:20b

128,000 tokens

Input formats

claude-opus-5

text, image

gpt-oss:20b

text

Vision

claude-opus-5Better fit

Supported

gpt-oss:20b

Not supported

Reasoning

claude-opus-5Better fit

Supported

gpt-oss:20b

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

$0.025

Output estimate

$0.03125

Estimated total

$0.05625

Cost calculator

Adjust the volume to see an instant estimate at the current public price.

1M tokens
10,000 tokens
01M

Input estimate

$0.0004

Output estimate

$0.00015

Estimated total

$0.00055

Quick take

  • claude-opus-5 has a larger context window.
  • claude-opus-5 supports image input while the other model does not.

Keep exploring