AnthropicClaude Haiku 4.5VSOpenAIGPT-5.4
Our Take
We recommend GPT-5.4 for complex complex codebases, multi-file repositories, and architectural planning, or the 2.8x cheaper Claude Haiku 4.5 if your budget requires optimizing costs for very high-volume pipelines. While GPT-5.4 offers a clear reasoning advantage, it carries a moderate price premium. Choose GPT-5.4 for architectural codebase planning, or Claude Haiku 4.5 to save on API costs for simple scripts.
▶WHY?
Benchmark Calculations & Evidence:
Coding Evaluation: Claude Haiku 4.5 was evaluated on SWE-bench Verified (scoring 73.3%), while GPT-5.4 was evaluated on SWE-bench Pro (scoring 57.7%).
Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. GPT-5.4 scored 92.8%, while Claude Haiku 4.5 scored 73%.
Cost Efficiency: Claude Haiku 4.5 pricing ($1/M input, $5/M output) is 2.8x cheaper than GPT-5.4 ($2.5/M input, $15/M output).
Was this recommendation helpful?
Benchmarks & Scores
Coding (swe-bench-verified)
73.3%multi-file code and clearly defined tasks
Reasoning (gpqa-diamond)
73%graduate-level science QA
Cost & Context
Cost (per 1M tokens)2.8x cheaper
$2.00Input: $1.00 | Output: $5.00Context Window
200k tokensBenchmarks & Scores
Coding (swe-bench-pro)
57.7%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+19.8%)
92.8%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$5.63Input: $2.50 | Output: $15.00Context WindowLarger
1.05M tokensFrequently Asked Questions about Claude Haiku 4.5 vs GPT-5.4
Claude Haiku 4.5 is cheaper than GPT-5.4. Claude Haiku 4.5 has a blended cost of $2.00/1M tokens, which is about 2.8x cheaper than GPT-5.4 at $5.63/1M tokens.
For coding tasks, Claude Haiku 4.5 scores 73.3% on swe-bench-verified (multi-file code and clearly defined tasks), while GPT-5.4 scores 57.7% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning).
Related Matchups
Explore similar comparisons for Claude Haiku 4.5 and GPT-5.4.
Do you want to find a model for your constraints?
Use our interactive model finder to filter LLMs by reasoning capability, coding performance, cost, and context length.