10 Best ChatGPT Alternatives in 2026: Practical API Options, Compared
Pricing verified as of 2026-08-19. DeepSeek changed to peak/off-peak pricing on 2026-08-17.
A rate comparison only holds for a stated token mix and date. Recalculate it against your workload before changing traffic.
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Get Started →Quick Comparison Table
| # | Model | Input $/M | Output $/M | Context | Best For |
|---|---|---|---|---|---|
| 1 | deepseek-v4-pro | $1.914 | $5.742 | 128K | Best overall value |
| 2 | glm-5 | $0.14 | $0.14 | 128K | most cost-effective quality |
| 3 | Claude 4 Opus | $15 | $75 | 200K | Long-form writing |
| 4 | kimi-k2 | $0.55 | $2.19 | 200K | Long context |
| 5 | Gemini 2.0 Pro | $1.25 | $5 | 2M | Massive context |
| 6 | ernie-4.0 | $0.55 | $2.19 | 128K | Chinese NLP |
| 7 | qwen-max | $0.55 | $2.19 | 128K | Coding, multilingual |
| 8 | Llama 4 70B | $0.59 | $0.79 | 128K | Open source |
| 9 | deepseek-reasoner | $1.914 | $5.742 | 128K | Reasoning (R1) |
| 10 | Mistral Large 3 | $2 | $6 | 128K | EU compliance |
1DeepSeek V4 Pro — A model to test
Benchmark results move with the task and test setup. Re-run the comparison on your acceptance set before deciding.
Why developers love it:
- Run the same acceptance set before choosing a route.
- 128K context window handles most use cases
- Native function calling and JSON mode
- Vision capabilities (image understanding)
- Streaming support out of the box
# Through AIWave — OpenAI-compatible
from openai import OpenAI
client = OpenAI(base_url="https://aiwave.live/v1", api_key="***")
response = client.chat.completions.create(
model="deepseek-v4-pro",
messages=[{"role": "user", "content": "Explain transformers"}]
)2GLM-5 — The Budget Champion
Zhipu's GLM-5 delivers GPT-4-level quality at $0.14/$0.14 per million tokens. That's cheaper than most embedding models. For high-volume workloads, nothing comes close.
GLM-5 particularly shines in:
- Chinese language tasks — best in class
- Code generation — competitive with GPT-4 on Python/JS
- RAG pipelines — excellent instruction following
- Recalculate the token mix with the dated rate card before choosing a route.
3Claude 4 Opus — The Writer
Anthropic's Claude 4 Opus remains the gold standard for long-form creative writing and nuanced analysis. But at $15/$75, it's the most expensive option on this list. Best for premium use cases where quality matters more than cost.
4Kimi K2 — The Long-Context King
Moonshot's Kimi K2 offers a 200K context window — enough for an entire codebase or a 300-page book. At $0.55/$2.19, it's the most cost-effective long-context model available. Perfect for document analysis, code review, and research.
5Gemini 2.0 Pro — The Giant
Google's Gemini 2.0 Pro boasts a 2M token context window. That's not a typo — 2 million tokens. The downside? Google's API is harder to work with, and pricing is higher than Chinese alternatives.
6ERNIE 4.0 — The Chinese NLP Specialist
A rate comparison only holds for a stated token mix and date. Recalculate it against your workload before changing traffic.
7Qwen Max — The Coder
Alibaba's Qwen Max is a strong all-rounder that particularly excels at code generation. It supports 128K context and handles Python, JavaScript, Java, C++, and Go with ease.
8Llama 4 70B — The Open Source Option
Meta's Llama 4 is fully open source. You can self-host it, but for most developers, API access is more practical. Quality is slightly below DeepSeek V4 Pro but at a competitive price point.
9DeepSeek Reasoner (R1) — The Thinker
Benchmark results move with the task and test setup. Re-run the comparison on your acceptance set before deciding.
10Mistral Large 3 — The European Choice
If you need EU data residency compliance, Mistral is your best bet. Quality is solid (between GPT-4 and GPT-4o), and pricing is reasonable at $2/$6.
The Real Cost Comparison
Let's say you process 10M input tokens and 2M output tokens per month (a medium-traffic app):
| Model | Input Cost | Output Cost | Monthly Total |
|---|---|---|---|
| GPT-4o | $25.00 | $20.00 | $45.00 |
| DeepSeek V4 Pro | $19.14 | $11.48 | $30.62 |
| GLM-5 | $14.00 | $0.56 | $14.56 |
| Claude 4 Opus | $150.00 | $150.00 | $300.00 |
A rate comparison only holds for a stated token mix and date. Recalculate it against your workload before changing traffic.
How to Choose
- Best overall: DeepSeek V4 Pro (quality × price)
- most cost-effective: GLM-5 (unbeatable at $0.14)
- Long documents: Kimi K2 (200K context)
- Premium writing: Claude 4 Opus (if budget allows)
- Chinese NLP: ERNIE 4.0
- Reasoning/math: DeepSeek Reasoner R1
- EU compliance: Mistral Large 3
Start Building Today
The easiest way to try all these models is through AIWave. One API key, OpenAI-compatible endpoint, a $5 minimum top-up:
pip install openai
# Change ONE line in your existing code:
client = OpenAI(
base_url="https://aiwave.live/v1", # ← just change this
api_key="sk-your-aiwave-key"
)
# Then use any model: deepseek-v4-pro, glm-5, kimi-k2, etc.Compare dated rates on the same workload
A $5 minimum top-up. No credit card. Email or GitHub account options are available. Just email + password.
Get Your API Key →Related Guides
- 5-Minute Quickstart Guide →
- Full Model Comparison (available model routes) →
- DeepSeek API Pricing Deep Dive →
- Complete Chinese AI API Guide →
- Plan an OpenAI Migration →
DeepSeek V4 API pricing · GLM-5 API pricing · Kimi API pricing · Qwen API pricing · ERNIE API pricing · OpenAI-compatible API docs · Chinese model comparison