API cost decision in 10 seconds

KAT-Coder-Pro V2 vs GPT-5.4 Nano

Pick GPT-5.4 Nano when budget and context both matter.

Pricing data updated: 2026-05-26T11:08:00Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick GPT-5.4 Nano when budget and context both matter.

On the standard 1M input plus 500K output workload, GPT-5.4 Nano is estimated at $0.82 vs $0.9 for KAT-Coder-Pro V2, saving $0.07 (8.3% lower).

Cost-first pickGPT-5.4 Nano

Context-first pickGPT-5.4 Nano

Sample savings$0.078.3%

10x traffic gap$0.75

GPT-5.4 Nano is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $0.75. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Cost winner changes by workload shape: input-heavy / RAG favors GPT-5.4 Nano, balanced workload favors GPT-5.4 Nano, and output-heavy chatbot favors KAT-Coder-Pro V2.

Workload shape	Token mix	Better pick	KAT-Coder-Pro V2	GPT-5.4 Nano
Input-heavy / RAG	5M input + 500K output	GPT-5.4 Nano	$2.1	$1.62
Balanced workload	1M input + 1M output	GPT-5.4 Nano	$1.5	$1.45
Output-heavy chatbot	1M input + 5M output	KAT-Coder-Pro V2	$6.3	$6.45

Cheaper input GPT-5.4 Nano $0.3 vs $0.2 / 1M

GPT-5.4 Nano is $0.1 cheaper per 1M input tokens (33.3% lower; 1.5x difference).

Cheaper output KAT-Coder-Pro V2 $1.2 vs $1.25 / 1M

KAT-Coder-Pro V2 is $0.05 cheaper per 1M output tokens (4% lower; 1.04x difference).

Larger context GPT-5.4 Nano 256K vs 400K

GPT-5.4 Nano has 144K more context (1.56x larger).

Sample workload GPT-5.4 Nano $0.9 vs $0.82

GPT-5.4 Nano is $0.07 cheaper on the standard workload (8.3% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

KAT-Coder-Pro V2 Calculating… Estimated API cost

GPT-5.4 Nano Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

GPT-5.4 Nano has the lower input price; KAT-Coder-Pro V2 has the lower output price; GPT-5.4 Nano offers the larger context window. For the 1M input plus 500K output sample, GPT-5.4 Nano is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.9 for KAT-Coder-Pro V2 and $0.82 for GPT-5.4 Nano.

Best Fit

Choose KAT-Coder-Pro V2 when you care most about lower output-token price.

Choose GPT-5.4 Nano when you care most about lower input-token price, and larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, GPT-5.4 Nano is estimated at $0.82 vs $0.9 for KAT-Coder-Pro V2, saving $0.07 (8.3% lower).
GPT-5.4 Nano is $0.07 cheaper on the standard workload (8.3% lower).
GPT-5.4 Nano is $0.1 cheaper per 1M input tokens (33.3% lower; 1.5x difference).
KAT-Coder-Pro V2 is $0.05 cheaper per 1M output tokens (4% lower; 1.04x difference).
GPT-5.4 Nano has 144K more context (1.56x larger).

Head-to-Head Specs

Feature	KAT-Coder-Pro V2 (Kwaipilot)	GPT-5.4 Nano (OpenAI)
Input Price prompt tokens per 1M	$0.3	$0.2
Completion Price per 1M tokens	$1.2	$1.25
Sample Workload Cost 1M input + 500K output	$0.9	$0.82
Context Window	256K	400K
Release Date	2026-03-27	2026-03-17

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	GPT-5.4 Nano	On the standard 1M input plus 500K output workload, GPT-5.4 Nano is estimated at $0.82 vs $0.9 for KAT-Coder-Pro V2, saving $0.07 (8.3% lower).
High-volume input processing	GPT-5.4 Nano	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	KAT-Coder-Pro V2	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	GPT-5.4 Nano	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

gpt-oss-120b (free) can replace GPT-5.4 Nano when lower sample workload cost matters most: $0.
gpt-oss-20b (free) can replace GPT-5.4 Nano when lower sample workload cost matters most: $0.
gpt-oss-20b can replace GPT-5.4 Nano when lower sample workload cost matters most: $0.1.
gpt-oss-120b can replace GPT-5.4 Nano when lower sample workload cost matters most: $0.13.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Owl Alpha offers 1.05M context with $0 sample workload cost.
Gemini 3.1 Flash Lite offers 1.05M context with $1 sample workload cost.
DeepSeek V4 Pro offers 1.05M context with $0.87 sample workload cost.

Popular competitors

No popular competitor is currently available.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

Open cheapest models

Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

Kwaipilot catalog

Review all tracked Kwaipilot models before deciding whether this matchup is the right shortlist.

Open Kwaipilot models

OpenAI catalog

Check other OpenAI models with comparable pricing, context, or release timing.

Open OpenAI models

KAT-Coder-Pro V2

KAT-Coder-Pro V2 is the latest high-performance model in KwaiKAT’s KAT-Coder series, designed for complex enterprise-grade software engineering and SaaS integration. It builds on the agentic coding strengths of earlier versions,...

GPT-5.4 Nano

GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency...