Compare/GPT-5 Codex (high) vs Nova 2.0 Pro Preview (medium)

GPT-5 Codex (high)vsNova 2.0 Pro Preview (medium)

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

OpenAI

GPT-5 Codex (high)

Input
$1.25/M
Output
$10/M
Speed
172 tok/s
TTFT
6.42s
Amazon

Nova 2.0 Pro Preview (medium)

Input
$1.25/M
Output
$10/M
Speed
131 tok/s
TTFT
13.69s

Winner by Category

Cheaper
Tie
Faster (tok/s)
GPT-5 Codex (high)
Lower Latency
GPT-5 Codex (high)
Benchmarks (9-2)
GPT-5 Codex (high)

Pricing Comparison

MetricGPT-5 Codex (high)Nova 2.0 Pro Preview (medium)
Input ($/M tokens)$1.25$1.25
Output ($/M tokens)$10$10
Cost for 1M input + 100K output tokens:
GPT-5 Codex (high)$2.25
Nova 2.0 Pro Preview (medium)$2.25

Speed Comparison

Output Speed (tokens/s) — higher is better
GPT-5 Codex (high)
172 tok/s
Nova 2.0 Pro Preview (medium)
131 tok/s
Time to First Token (seconds) — lower is better
GPT-5 Codex (high)
6.42s
Nova 2.0 Pro Preview (medium)
13.69s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
44.635.7
Coding Index
38.930.4
Math Index
98.789.0
GPQA Diamond
83.7%78.5%
MMLU-Pro
86.5%83.0%
LiveCodeBench
84.0%73.0%
AIME 2025
98.7%89.0%
MATH-500
Humanity's Last Exam
25.6%8.9%
SciCode
40.9%42.7%
IFBench
74.1%79.0%
TerminalBench
37.9%24.2%
GPT-5 Codex (high)9 wins
2 winsNova 2.0 Pro Preview (medium)

Frequently Asked Questions

Which is cheaper, GPT-5 Codex (high) or Nova 2.0 Pro Preview (medium)?

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

Which model performs better on benchmarks?

GPT-5 Codex (high) wins 9 out of 12 benchmarks compared to 2 for Nova 2.0 Pro Preview (medium). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5 Codex (high) generates tokens faster at 172 tok/s vs 131 tok/s. GPT-5 Codex (high) also has lower time-to-first-token (6.42s vs 13.69s).

When should I use GPT-5 Codex (high) vs Nova 2.0 Pro Preview (medium)?

Choose based on your priorities: both are similarly priced, GPT-5 Codex (high) for stronger benchmark performance, and GPT-5 Codex (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.