Head-to-head

GPT-5.4 vs Claude Sonnet 5

This page compares two higher-end general models that buyers often evaluate for more demanding research, writing, and workflow tasks.

2 modelsLive catalog comparison

PriceCurrent TVP token pricing

ContextCurrent listed window sizes

Fast answer

Choose on the workflow, then use live metrics as the tiebreaker

Choose GPT-5.4 when OpenAI tooling and route consistency matter most

Data source and freshness

Catalog-backed, not a static price sheet

TVP refreshes this page from the live OpenRouter model catalog. This render used 428 public model records and was synchronized Jul 14, 2026, 9:36 PM UTC. Pricing, availability, and context values can change.

Verify the exact route before sending production traffic, then use the linked model and provider pages as the source for current values. Read the TVP data methodology.

Head to head

Current live model comparison

openai

OpenAI: GPT-5.4

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...

Context1,050,000

Input$2.50

Output$15.00

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Model details Provider page

anthropic

Anthropic: Claude Sonnet 5

Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...

Context1,000,000

Input$2.00

Output$10.00

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image
file
tools
structured

Model details Provider page

Comparison FAQ

How to use this decision page

Are these both premium-tier options?

Yes. This page is mainly useful when teams are deciding between two stronger general models and need live operational data rather than only brand preference.

Should startups use this comparison first?

Usually no. Startups often benefit more from lower-cost comparisons first unless the workload really needs a premium model.