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Anthropic

Claude Opus 4.8

VS
OpenAI

GPT-5.4 mini

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Claude Opus 4.8 is the premium intelligence choice, scoring 14.8% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GPT-5.4 mini is 5.9x cheaper to run and delivers 4.2x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GPT-5.4 mini offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Claude Opus 4.8 fully justifies the cost.

Model Specs

Claude Opus 4.8

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+14.8%)
69.2%
Reasoning (gpqa-diamond)Winner (+6.1%)
93.6%

Cost & Performance

Cost (per 1M tokens)
$10.00Input: $5.00 | Output: $25.00
Speed
48.1 tps
Context WindowLarger
1M tokens
Model Specs

GPT-5.4 mini

Benchmarks & Scores

Coding (swe-bench-pro)
54.4%
Reasoning (gpqa-diamond)
87.5%

Cost & Performance

Cost (per 1M tokens)5.9x cheaper
$1.69Input: $0.75 | Output: $4.50
Speed4.2x faster
201 tps
Context Window
400k tokens
Read our data collection methodology

Frequently Asked Questions

GPT-5.4 mini is cheaper than Claude Opus 4.8. GPT-5.4 mini has a blended cost of $1.69/1M tokens, which is about 5.9x cheaper than Claude Opus 4.8 at $10.00/1M tokens.

GPT-5.4 mini is faster than Claude Opus 4.8. GPT-5.4 mini generates 201 tokens per second (tps) compared to Claude Opus 4.8 which generates 48.1 tokens per second.

Claude Opus 4.8 is better for coding tasks. It scores 69.2% on coding evaluations (swe-bench-pro) compared to GPT-5.4 mini which scores 54.4%.

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