Compare/Nova 2.0 Pro Preview (Non-reasoning) vs GPT-5.1 Codex (high)

Nova 2.0 Pro Preview (Non-reasoning)vsGPT-5.1 Codex (high)

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

Amazon

Nova 2.0 Pro Preview (Non-reasoning)

Input
$1.25/M
Output
$10/M
Speed
150 tok/s
TTFT
0.47s
OpenAI

GPT-5.1 Codex (high)

Input
$1.25/M
Output
$10/M
Speed
168 tok/s
TTFT
5.12s

Winner by Category

Cheaper
Tie
Faster (tok/s)
GPT-5.1 Codex (high)
Lower Latency
Nova 2.0 Pro Preview (Non-reasoning)
Benchmarks (0-11)
GPT-5.1 Codex (high)

Pricing Comparison

MetricNova 2.0 Pro Preview (Non-reasoning)GPT-5.1 Codex (high)
Input ($/M tokens)$1.25$1.25
Output ($/M tokens)$10$10
Cost for 1M input + 100K output tokens:
Nova 2.0 Pro Preview (Non-reasoning)$2.25
GPT-5.1 Codex (high)$2.25

Speed Comparison

Output Speed (tokens/s) — higher is better
Nova 2.0 Pro Preview (Non-reasoning)
150 tok/s
GPT-5.1 Codex (high)
168 tok/s
Time to First Token (seconds) — lower is better
Nova 2.0 Pro Preview (Non-reasoning)
0.47s
GPT-5.1 Codex (high)
5.12s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
23.143.1
Coding Index
20.536.6
Math Index
30.795.7
GPQA Diamond
63.6%86.0%
MMLU-Pro
77.2%86.0%
LiveCodeBench
47.3%84.9%
AIME 2025
30.7%95.7%
MATH-500
Humanity's Last Exam
4.0%23.4%
SciCode
28.1%40.2%
IFBench
52.0%70.0%
TerminalBench
16.7%34.8%
Nova 2.0 Pro Preview (Non-reasoning)0 wins
11 winsGPT-5.1 Codex (high)

Frequently Asked Questions

Which is cheaper, Nova 2.0 Pro Preview (Non-reasoning) or GPT-5.1 Codex (high)?

Both models have similar pricing. Check the detailed breakdown above for input vs output token costs.

Which model performs better on benchmarks?

GPT-5.1 Codex (high) wins 11 out of 12 benchmarks compared to 0 for Nova 2.0 Pro Preview (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.1 Codex (high) generates tokens faster at 168 tok/s vs 150 tok/s. Nova 2.0 Pro Preview (Non-reasoning) also has lower time-to-first-token (0.47s vs 5.12s).

When should I use Nova 2.0 Pro Preview (Non-reasoning) vs GPT-5.1 Codex (high)?

Choose based on your priorities: both are similarly priced, GPT-5.1 Codex (high) for stronger benchmark performance, and GPT-5.1 Codex (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.