GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium): The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) Showdown

After a comprehensive analysis, GPT-5.1 Codex (high) emerges as the superior choice for users prioritizing raw intelligence and reasoning. However, Nova 2.0 Pro Preview (medium) remains a highly competitive option, especially for scenarios demanding faster response times and cost-efficiency. This detailed GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) comparison will break down every critical metric to help you make the best decision.

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Model Snapshot

Key decision metrics at a glance.

GPT-5.1 Codex (high)

OpenAI

Reasoning: 10
Coding: 4
Multimodal: 4
Long Context: 5
Blended Price / 1M tokens: $0.003
P95 Latency: 1000ms
Tokens per second: 254.585tokens/sec

Nova 2.0 Pro Preview (medium)

Other

Reasoning: 9
Coding: 3
Multimodal: 3
Long Context: 4
Blended Price / 1M tokens: $0.003
P95 Latency: 1000ms
Tokens per second: 128.133tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `GPT-5.1 Codex (high)` vs `Nova 2.0 Pro Preview (medium)`.

Benchmark Breakdown

For a granular look, this chart directly compares scores across standardized benchmarks. In the critical MMLU Pro test, a key part of the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) debate, GPT-5.1 Codex (high) scores 100 against Nova 2.0 Pro Preview (medium)'s 90. This data-driven approach is essential for any serious GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) comparison.

This grouped bar chart provides a side-by-side comparison for each benchmark metric.

Speed & Latency

Speed is a crucial factor in the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token

GPT-5.1 Codex (high)300ms

Nova 2.0 Pro Preview (medium)300ms

Tokens per Second

GPT-5.1 Codex (high)254.585

Nova 2.0 Pro Preview (medium)128.133

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The Economics of GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium)

Power is only one part of the equation. This GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) pricing analysis gives you a true sense of value.

Pricing Breakdown

Compare input and output pricing at a glance.

Real-World Cost Scenario

To process 1M input tokens and generate 250k output tokens, GPT-5.1 Codex (high) would cost $0.004, whereas Nova 2.0 Pro Preview (medium) would cost $0.004. This practical calculation is vital for any developer considering the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) choice.

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Which Model Wins the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) Battle for You?

Choose GPT-5.1 Codex (high) if...

Your top priority is raw performance and capability.

You are working in a technical or scientific field requiring the highest accuracy.

You need the most advanced reasoning capabilities available.

Choose Nova 2.0 Pro Preview (medium) if...

You are developing at scale where operational costs are critical.

You prioritize cost-effectiveness over maximum performance.

Your workload requires consistent, reliable performance.

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Your Questions about the GPT-5.1 Codex (high) vs Nova 2.0 Pro Preview (medium) Comparison

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Data source: https://artificialanalysis.ai/