Compare/Claude 4.5 Sonnet (Non-reasoning) vs GPT-5.4 (Non-reasoning)

Claude 4.5 Sonnet (Non-reasoning)vsGPT-5.4 (Non-reasoning)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

Anthropic

Claude 4.5 Sonnet (Non-reasoning)

Input
$3.75/M
Output
$15/M
Speed
46 tok/s
TTFT
1.47s
OpenAI

GPT-5.4 (Non-reasoning)

Input
$2.5/M
Output
$15/M
Speed
62 tok/s
TTFT
0.71s

Winner by Category

Cheaper
GPT-5.4 (Non-reasoning)
Faster (tok/s)
GPT-5.4 (Non-reasoning)
Lower Latency
GPT-5.4 (Non-reasoning)
Benchmarks (5-6)
GPT-5.4 (Non-reasoning)

Pricing Comparison

MetricClaude 4.5 Sonnet (Non-reasoning)GPT-5.4 (Non-reasoning)
Input ($/M tokens)$3.75$2.5
Output ($/M tokens)$15$15
Cost for 1M input + 100K output tokens:
Claude 4.5 Sonnet (Non-reasoning)$5.25
GPT-5.4 (Non-reasoning)$4.00

Speed Comparison

Output Speed (tokens/s) — higher is better
Claude 4.5 Sonnet (Non-reasoning)
46 tok/s
GPT-5.4 (Non-reasoning)
62 tok/s
Time to First Token (seconds) — lower is better
Claude 4.5 Sonnet (Non-reasoning)
1.47s
GPT-5.4 (Non-reasoning)
0.71s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
37.135.4
Coding Index
33.541.0
Math Index
37.0
GPQA Diamond
72.7%74.8%
MMLU-Pro
86.0%
LiveCodeBench
59.0%
AIME 2025
37.0%
MATH-500
Humanity's Last Exam
7.1%10.6%
SciCode
42.8%47.1%
IFBench
42.7%48.4%
TerminalBench
28.8%37.9%
Claude 4.5 Sonnet (Non-reasoning)5 wins
6 winsGPT-5.4 (Non-reasoning)

Frequently Asked Questions

Which is cheaper, Claude 4.5 Sonnet (Non-reasoning) or GPT-5.4 (Non-reasoning)?

GPT-5.4 (Non-reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $5.63/M tokens vs $6.56/M for Claude 4.5 Sonnet (Non-reasoning).

Which model performs better on benchmarks?

GPT-5.4 (Non-reasoning) wins 6 out of 12 benchmarks compared to 5 for Claude 4.5 Sonnet (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.4 (Non-reasoning) generates tokens faster at 62 tok/s vs 46 tok/s. However, GPT-5.4 (Non-reasoning) has lower time-to-first-token (0.71s vs 1.47s).

When should I use Claude 4.5 Sonnet (Non-reasoning) vs GPT-5.4 (Non-reasoning)?

Choose based on your priorities: GPT-5.4 (Non-reasoning) for lower cost, GPT-5.4 (Non-reasoning) for stronger benchmark performance, and GPT-5.4 (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.