Compare/GPT-5.6 Terra (Non-reasoning) vs Claude 3.5 Sonnet (Oct '24)

GPT-5.6 Terra (Non-reasoning)vsClaude 3.5 Sonnet (Oct '24)

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

OpenAI

GPT-5.6 Terra (Non-reasoning)

Input
$2.5/M
Output
$15/M
Speed
146 tok/s
TTFT
0.76s
Anthropic

Claude 3.5 Sonnet (Oct '24)

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

Winner by Category

Cheaper
GPT-5.6 Terra (Non-reasoning)
Faster (tok/s)
GPT-5.6 Terra (Non-reasoning)
Lower Latency
Claude 3.5 Sonnet (Oct '24)
Benchmarks (5-3)
GPT-5.6 Terra (Non-reasoning)

Pricing Comparison

MetricGPT-5.6 Terra (Non-reasoning)Claude 3.5 Sonnet (Oct '24)
Input ($/M tokens)$2.5$3
Output ($/M tokens)$15$15
Cost for 1M input + 100K output tokens:
GPT-5.6 Terra (Non-reasoning)$4.00
Claude 3.5 Sonnet (Oct '24)$4.50

Speed Comparison

Output Speed (tokens/s) — higher is better
GPT-5.6 Terra (Non-reasoning)
146 tok/s
Claude 3.5 Sonnet (Oct '24)
Time to First Token (seconds) — lower is better
GPT-5.6 Terra (Non-reasoning)
0.76s
Claude 3.5 Sonnet (Oct '24)

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
34.09.9
Coding Index
52.330.2
Math Index
GPQA Diamond
74.6%59.9%
MMLU-Pro
77.2%
LiveCodeBench
38.1%
AIME 2025
MATH-500
77.1%
Humanity's Last Exam
11.0%3.9%
SciCode
44.6%36.6%
IFBench
TerminalBench
GPT-5.6 Terra (Non-reasoning)5 wins
3 winsClaude 3.5 Sonnet (Oct '24)

Frequently Asked Questions

Which is cheaper, GPT-5.6 Terra (Non-reasoning) or Claude 3.5 Sonnet (Oct '24)?

GPT-5.6 Terra (Non-reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $5.63/M tokens vs $6.00/M for Claude 3.5 Sonnet (Oct '24).

Which model performs better on benchmarks?

GPT-5.6 Terra (Non-reasoning) wins 5 out of 12 benchmarks compared to 3 for Claude 3.5 Sonnet (Oct '24). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.6 Terra (Non-reasoning) generates tokens faster at 146 tok/s vs 0 tok/s. However, Claude 3.5 Sonnet (Oct '24) has lower time-to-first-token (0.00s vs 0.76s).

When should I use GPT-5.6 Terra (Non-reasoning) vs Claude 3.5 Sonnet (Oct '24)?

Choose based on your priorities: GPT-5.6 Terra (Non-reasoning) for lower cost, GPT-5.6 Terra (Non-reasoning) for stronger benchmark performance, and GPT-5.6 Terra (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.