Compare/GPT-5.2 (xhigh) vs Claude 3.5 Sonnet (June '24)

GPT-5.2 (xhigh)vsClaude 3.5 Sonnet (June '24)

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

OpenAI

GPT-5.2 (xhigh)

Input
$1.75/M
Output
$14/M
Speed
66 tok/s
TTFT
74.69s
Anthropic

Claude 3.5 Sonnet (June '24)

Input
$3/M
Output
$15/M
Speed
TTFT

Winner by Category

Cheaper
GPT-5.2 (xhigh)
Faster (tok/s)
GPT-5.2 (xhigh)
Lower Latency
Claude 3.5 Sonnet (June '24)
Benchmarks (11-1)
GPT-5.2 (xhigh)

Pricing Comparison

MetricGPT-5.2 (xhigh)Claude 3.5 Sonnet (June '24)
Input ($/M tokens)$1.75$3
Output ($/M tokens)$14$15
Cost for 1M input + 100K output tokens:
GPT-5.2 (xhigh)$3.15
Claude 3.5 Sonnet (June '24)$4.50

Speed Comparison

Output Speed (tokens/s) — higher is better
GPT-5.2 (xhigh)
66 tok/s
Claude 3.5 Sonnet (June '24)
Time to First Token (seconds) — lower is better
GPT-5.2 (xhigh)
74.69s
Claude 3.5 Sonnet (June '24)

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
51.314.2
Coding Index
48.726.0
Math Index
99.0
GPQA Diamond
90.3%56.0%
MMLU-Pro
87.4%75.1%
LiveCodeBench
88.9%
AIME 2025
99.0%
MATH-500
69.5%
Humanity's Last Exam
35.4%3.7%
SciCode
52.1%31.6%
IFBench
75.4%
TerminalBench
47.0%
GPT-5.2 (xhigh)11 wins
1 winsClaude 3.5 Sonnet (June '24)

Frequently Asked Questions

Which is cheaper, GPT-5.2 (xhigh) or Claude 3.5 Sonnet (June '24)?

GPT-5.2 (xhigh) is cheaper overall. Its blended price (3:1 input/output ratio) is $4.81/M tokens vs $6.00/M for Claude 3.5 Sonnet (June '24).

Which model performs better on benchmarks?

GPT-5.2 (xhigh) wins 11 out of 12 benchmarks compared to 1 for Claude 3.5 Sonnet (June '24). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.2 (xhigh) generates tokens faster at 66 tok/s vs 0 tok/s. However, Claude 3.5 Sonnet (June '24) has lower time-to-first-token (0.00s vs 74.69s).

When should I use GPT-5.2 (xhigh) vs Claude 3.5 Sonnet (June '24)?

Choose based on your priorities: GPT-5.2 (xhigh) for lower cost, GPT-5.2 (xhigh) for stronger benchmark performance, and GPT-5.2 (xhigh) for faster generation. For latency-sensitive apps, check the TTFT comparison above.