OpenAIGPT-5.4 ProVSOpenAIGPT-5.6 Terra
Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing GPT-5.4 Pro and GPT-5.6 Terra directly in their respective provider playgrounds to see which fits your specific prompt styles best.
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Benchmarks & Scores
Coding (swe-bench-pro)
N/Aexcellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
67.6%graduate-level science QA
Cost & Context
Cost (per 1M tokens)40.9x cheaper
$0.14Input: $0.05 | Output: $0.40Context Window
400k tokensBenchmarks & Scores
Coding (swe-bench-pro)
63.4%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+25.3%)
92.9%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$5.63Input: $2.50 | Output: $15.00Context WindowLarger
1.05M tokensFrequently Asked Questions about GPT-5.4 Pro vs GPT-5.6 Terra
GPT-5.4 Pro is cheaper than GPT-5.6 Terra. GPT-5.4 Pro has a blended cost of $0.14/1M tokens, which is about 40.9x cheaper than GPT-5.6 Terra at $5.63/1M tokens.
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