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
166 tok/s
TTFT
6.66s
Amazon

Nova 2.0 Pro Preview (medium)

Input
$1.25/M
Output
$10/M
Speed
124 tok/s
TTFT
15.64s

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)
166 tok/s
Nova 2.0 Pro Preview (medium)
124 tok/s
Time to First Token (seconds) — lower is better
GPT-5 Codex (high)
6.66s
Nova 2.0 Pro Preview (medium)
15.64s

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 166 tok/s vs 124 tok/s. GPT-5 Codex (high) also has lower time-to-first-token (6.66s vs 15.64s).

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.