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Questions, answered.

The 75 most-searched AI-API questions we hear, with short answers you can lift into your own docs. Each page links out to the relevant model spec, compare, or pricing page.

Free APIs

4
Is there a free LLM API?
/q/free-llm-api
Is there a free Claude API?
/q/free-claude-api
Is there a free GPT API?
/q/free-gpt-api
Is there an AI API with no credit card required?
/q/free-ai-api-no-credit-card

Cheapest by capability

6
What is the cheapest model for tool calling?
/q/cheapest-tool-calling-model
What is the cheapest vision model?
/q/cheapest-vision-model
What is the cheapest model with JSON mode?
/q/cheapest-json-mode-model
What is the cheapest reasoning model?
/q/cheapest-reasoning-model
What is the cheapest model that supports streaming?
/q/cheapest-streaming-model
What is the cheapest long-context model?
/q/cheapest-long-context-model

By modality

5
What is the best image generation API?
/q/image-generation-api-comparison
What is the best audio transcription API?
/q/audio-transcription-api-comparison
What is the best text-to-speech API?
/q/audio-tts-api-comparison
What is the best video generation API?
/q/video-generation-api-comparison
What is the best embedding API?
/q/embedding-api-comparison

How-to

15
How do I use Claude Opus 4.8?
/q/how-to-use-anthropic-claude-opus-4.8
How do I use MiniMax M3?
/q/how-to-use-minimax-m3
How do I use Gemini 3.1 Pro?
/q/how-to-use-google-gemini-3.1-pro
How do I use Claude Sonnet 4.6?
/q/how-to-use-anthropic-claude-sonnet-4.6
How do I use GPT-5.5?
/q/how-to-use-openai-gpt-5.5
How do I use O3?
/q/how-to-use-openai-o3
How do I use Gemini 2.5 Pro?
/q/how-to-use-google-gemini-2.5-pro
How do I use Kimi-K2.6?
/q/how-to-use-moonshot-kimi-k2.6
How do I use Qwen 3.5 397B A17B?
/q/how-to-use-alibaba-qwen3.5-397b-a17b
How do I use Grok 4.20 Multi-Agent?
/q/how-to-use-xai-grok-4.20-multi-agent-0309
How do I use GPT-5.4 Mini?
/q/how-to-use-openai-gpt-5.4-mini
How do I use GPT-5.5 Pro?
/q/how-to-use-openai-gpt-5.5-pro
How do I use Grok Imagine Video 1.5 Preview?
/q/how-to-use-xai-grok-imagine-video-1.5-preview
How do I use Gemma-4-26b-A4b-IT?
/q/how-to-use-google-gemma-4-26b-a4b-it
How do I use Claude Haiku 4.5?
/q/how-to-use-anthropic-claude-haiku-4.5

Pricing

15
How much does Claude Opus 4.8 cost?
/q/anthropic-claude-opus-4.8-pricing
How much does MiniMax M3 cost?
/q/minimax-m3-pricing
How much does Gemini 3.1 Pro cost?
/q/google-gemini-3.1-pro-pricing
How much does Claude Sonnet 4.6 cost?
/q/anthropic-claude-sonnet-4.6-pricing
How much does GPT-5.5 cost?
/q/openai-gpt-5.5-pricing
How much does O3 cost?
/q/openai-o3-pricing
How much does Gemini 2.5 Pro cost?
/q/google-gemini-2.5-pro-pricing
How much does Kimi-K2.6 cost?
/q/moonshot-kimi-k2.6-pricing
How much does Qwen 3.5 397B A17B cost?
/q/alibaba-qwen3.5-397b-a17b-pricing
How much does Grok 4.20 Multi-Agent cost?
/q/xai-grok-4.20-multi-agent-0309-pricing
How much does GPT-5.4 Mini cost?
/q/openai-gpt-5.4-mini-pricing
How much does GPT-5.5 Pro cost?
/q/openai-gpt-5.5-pro-pricing
How much does Grok Imagine Video 1.5 Preview cost?
/q/xai-grok-imagine-video-1.5-preview-pricing
How much does Gemma-4-26b-A4b-IT cost?
/q/google-gemma-4-26b-a4b-it-pricing
How much does Claude Haiku 4.5 cost?
/q/anthropic-claude-haiku-4.5-pricing

Python

15
Claude Opus 4.8 Python example?
/q/anthropic-claude-opus-4.8-python-example
MiniMax M3 Python example?
/q/minimax-m3-python-example
Gemini 3.1 Pro Python example?
/q/google-gemini-3.1-pro-python-example
Claude Sonnet 4.6 Python example?
/q/anthropic-claude-sonnet-4.6-python-example
GPT-5.5 Python example?
/q/openai-gpt-5.5-python-example
O3 Python example?
/q/openai-o3-python-example
Gemini 2.5 Pro Python example?
/q/google-gemini-2.5-pro-python-example
Kimi-K2.6 Python example?
/q/moonshot-kimi-k2.6-python-example
Qwen 3.5 397B A17B Python example?
/q/alibaba-qwen3.5-397b-a17b-python-example
Grok 4.20 Multi-Agent Python example?
/q/xai-grok-4.20-multi-agent-0309-python-example
GPT-5.4 Mini Python example?
/q/openai-gpt-5.4-mini-python-example
GPT-5.5 Pro Python example?
/q/openai-gpt-5.5-pro-python-example
Grok Imagine Video 1.5 Preview Python example?
/q/xai-grok-imagine-video-1.5-preview-python-example
Gemma-4-26b-A4b-IT Python example?
/q/google-gemma-4-26b-a4b-it-python-example
Claude Haiku 4.5 Python example?
/q/anthropic-claude-haiku-4.5-python-example

API key

15
How do I get a Claude Opus 4.8 API key?
/q/anthropic-claude-opus-4.8-api-key
How do I get a MiniMax M3 API key?
/q/minimax-m3-api-key
How do I get a Gemini 3.1 Pro API key?
/q/google-gemini-3.1-pro-api-key
How do I get a Claude Sonnet 4.6 API key?
/q/anthropic-claude-sonnet-4.6-api-key
How do I get a GPT-5.5 API key?
/q/openai-gpt-5.5-api-key
How do I get a O3 API key?
/q/openai-o3-api-key
How do I get a Gemini 2.5 Pro API key?
/q/google-gemini-2.5-pro-api-key
How do I get a Kimi-K2.6 API key?
/q/moonshot-kimi-k2.6-api-key
How do I get a Qwen 3.5 397B A17B API key?
/q/alibaba-qwen3.5-397b-a17b-api-key
How do I get a Grok 4.20 Multi-Agent API key?
/q/xai-grok-4.20-multi-agent-0309-api-key
How do I get a GPT-5.4 Mini API key?
/q/openai-gpt-5.4-mini-api-key
How do I get a GPT-5.5 Pro API key?
/q/openai-gpt-5.5-pro-api-key
How do I get a Grok Imagine Video 1.5 Preview API key?
/q/xai-grok-imagine-video-1.5-preview-api-key
How do I get a Gemma-4-26b-A4b-IT API key?
/q/google-gemma-4-26b-a4b-it-api-key
How do I get a Claude Haiku 4.5 API key?
/q/anthropic-claude-haiku-4.5-api-key