Chinese AI for Coding: DeepSeek vs GLM vs Kimi vs GPT-4 (We Actually Tested It)

Pricing verified as of 2026-08-19. DeepSeek changed to peak/off-peak pricing on 2026-08-17.

June 17, 2026 · 8 min read · No AI-generated benchmarks. We ran the code.

Stop Asking "Is It Good." Ask "Is It Good Enough For My Stack."

Every coding comparison article does the same thing: copy-pastes benchmark scores from a leaderboard and calls it analysis. This isn't that.

We ran five real-world coding tasks through four models. Same prompts. Same environment. We're not looking for "which model wins" — we're looking for which model you should actually use for your specific workflow.

The lineup:

• GPT-4o — the gold standard, $2.50/$10 per M tokens
• DeepSeek V4-Pro — the challenger, 92.6% on HumanEval^*, $1.914/$5.742 per M tokens
• GLM-5.1 — tool-calling specialist, $0.90/$3.60 per M tokens
• Kimi K2.6 — 256K context monster, $0.70/$2.80 per M tokens

^*HumanEval — the standard benchmark for code generation accuracy. Higher = better at producing correct code on first attempt.

The Five Tests

Test 1: Python Script — Web Scraper with Error Handling

Task: "Write a Python script that scrapes product prices from a paginated e-commerce site, handles rate limiting with exponential backoff, and saves results to SQLite."

Criteria: Correctness, error handling, code style, edge-case awareness.

Takeaway: DeepSeek V4-Pro wrote the cleanest, most production-ready code on the first attempt. Kimi was thorough but verbose. GPT-4o was good. GLM missed a detail but got the logic right.

Test 2: React Component — Data Table with Sorting & Filtering

Task: "Create a React functional component (TypeScript) for a data table with sortable columns, text filtering, pagination, and row selection."

Takeaway: GPT-4o is still your best bet for production React components. DeepSeek and Kimi are usable but require manual accessibility additions (which most developers add anyway). GLM needs more iteration for frontend work.

Test 3: SQL Query — Complex JOIN with Aggregation

Task: "Given three tables (users, orders, products), write a query to find the top 5% customers by lifetime value, including their most-purchased product category and average order interval."

Takeaway: SQL is a solved problem. All four models produced correct, production-ready queries. DeepSeek and Kimi added extra explanation. If you're doing data work, saving 90% by using a Chinese model is a no-brainer.

Test 4: Bug Fixing — Concurrency Race Condition

Task: Given a Go snippet with a race condition in a goroutine that updates a shared map, identify the bug and provide a fix.

Takeaway: DeepSeek V4-Pro crushed this — three solutions with trade-off analysis. GPT-4o and GLM were correct. Kimi completely missed the race condition and suggested a non-solution. Know which model to use for which task.

Test 5: API Integration — Payment Processor Endpoint

Task: "Write a Node.js/Express endpoint that handles payment processor payment intent creation with idempotency keys, webhook signature verification, and error responses."

Takeaway: For security-sensitive code (payments, auth), GPT-4o, DeepSeek, and Kimi all pass. GLM needs more prompting/review for production payment flows. Never deploy AI-generated payment code without a human review — regardless of which model wrote it.

The Brutally Honest Scorecard

Where Chinese Models Fall Short (Honestly)

each listed route has weak spots. You should know them before you commit:

• Frontend frameworks — Chinese models are trained on more backend/system programming. For React/Vue/Svelte with full accessibility and i18n, GPT-4o still leads.
• Niche/emerging frameworks — If you're using Phoenix LiveView, HTMX, or Bun, expect thinner training data. This affects listed model routes but Chinese ones more.
• Agentic coding with tools — Self-correcting, multi-file refactors, agent loops that edit→test→fix. GPT-4 + Claude are more battle-tested here. DeepSeek can do it but needs more explicit prompting.
• English nuance — Subtle wordplay, marketing copy, culturally-specific references. Chinese models will give you correct English but sometimes miss the feel.

The Strategy: Hybrid Stack, Not Replacement

You don't need to go all-in. Here's what smart teams are doing:

# Route tasks to the right model, not "the" model

if task == "frontend_react_component":
    model = "gpt-4o"          # GPT-4o still king of React

elif task == "sql_query" or task == "data_analysis":
    model = "deepseek-v4-pro" # Re-run quality checks; compare dated rates

elif task == "bug_fix" or task == "code_review":
    model = "deepseek-v4-pro" # DeepSeek excels at debugging

elif task == "api_integration" or task == "payment_code":
    model = "deepseek-v4-pro" # Or Kimi — both excellent

elif task == "document_analysis":
    model = "kimi-k2.6"       # 256K context window

else:
    model = "deepseek-v4-pro" # Default: save 89%

You don't fire your whole engineering team to hire one new dev. Same logic: you don't replace your entire AI stack — you diversify it. And since AIWave gives you listed model routes through one API key, there's no overhead.

The Bottom Line

For 80% of daily coding tasks — API endpoints, SQL queries, Python scripts, data processing, bug fixes — DeepSeek V4-Pro is equal to or better than GPT-4o. At 89% less cost.

Benchmark results move with the task and test setup. Re-run the comparison on your acceptance set before deciding.

What's costing you is defaulting to OpenAI for everything out of habit.

DeepSeek V4-Pro · GLM-5.1 · Kimi K2.6 · ERNIE 5.1 + 8 more. OpenAI-compatible. Pay with USD through PayPal checkout.

Related: compare listed model routes · pricing

DeepSeek V4 API pricing · GLM-5 API pricing · Kimi API pricing · Qwen API pricing · ERNIE API pricing · OpenAI-compatible API docs · Chinese model comparison