Moonshot AI vs xAI: Token Pricing, Speed & Intelligence

Full comparison of Moonshot AI and xAI — live token pricing, latency, throughput, context window, strengths, weaknesses, and best use cases. Updated July 2026.

Moonshot AI

Kimi — long-context frontier models from China's leading AI lab

Moonshot AI is a Chinese AI startup behind the Kimi model family. Kimi K2 is a 1-trillion-parameter MoE model released as open-weight, competitive with frontier models on coding and agentic tasks. The Kimi API offers long-context processing up to 128K tokens with competitive pricing.

CodingAgentsLong-contextReasoningMultilingual

Proprietary modelsHosts open weights

xAI

Grok 3 — Elon Musk's frontier AI with real-time web access

xAI is Elon Musk's AI company, building the Grok model family. Grok 3 is a frontier-tier model with a 131K context window and strong vision capabilities. Grok 3 Mini is a cost-efficient reasoning model. The API is available via the xAI platform with competitive frontier pricing.

Real-time dataReasoningVisionChatResearch

Proprietary models

Key metrics

Cheapest input ($/1M)

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Cheapest output ($/1M)

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Peak throughput

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Best latency (TTFT)

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Intelligence score

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Context window

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Live token pricing

Strengths & weaknesses

Moonshot AI

Kimi K2 is a 1T MoE open-weight model with strong coding scores

Competitive on agentic and tool-use benchmarks

Long-context support up to 128K tokens

Open-weight release enables self-hosting

Strong performance on Chinese-language tasks

API primarily targets Chinese market — international latency may vary

Smaller ecosystem than OpenAI or Anthropic

Fewer third-party integrations available

xAI

Real-time web access and X/Twitter data integration

Grok 3 Mini is a cost-efficient reasoning model

Strong vision capabilities on Grok 3

Competitive frontier pricing

OpenAI-compatible API

Smaller ecosystem and fewer integrations than OpenAI

No open-weight models

Limited model selection compared to frontier competitors

Key differentiators

Moonshot AI

Kimi K2 is a 1-trillion-parameter open-weight MoE model that scores competitively with Claude Sonnet on coding and agentic benchmarks.

xAI

Unique access to real-time X/Twitter data and web search — the only frontier model with native social media grounding.

Frequently asked questions

Moonshot AI FAQs

What is Kimi K2?

Kimi K2 is a 1-trillion-parameter mixture-of-experts model from Moonshot AI, released as open-weight. It activates approximately 32B parameters per token and is designed for coding, agentic tasks, and long-context reasoning.

Is Kimi K2 open-weight?

Yes. Kimi K2 weights are publicly available on Hugging Face, making it one of the largest open-weight models available. Teams can self-host it on multi-GPU clusters or access it via the Moonshot API.

How does Kimi K2 compare to Claude Sonnet?

Kimi K2 scores competitively with Claude Sonnet 4 on coding benchmarks including SWE-bench. It is particularly strong on agentic tasks that require tool use and multi-step planning.

xAI FAQs

What is Grok and how much does it cost?

Grok is xAI's family of frontier LLMs. Grok 3 costs $3/1M input and $15/1M output tokens. Grok 3 Mini is a cheaper reasoning model at lower price points. Both support vision and function calling.

Does Grok have real-time web access?

Yes. Grok models can access real-time web content and X/Twitter data, making them uniquely suited for applications that need current information beyond a training cutoff.

How does Grok 3 compare to GPT-4o?

Grok 3 is competitive with GPT-4o on most benchmarks with strong vision capabilities. Its main differentiator is real-time web and X/Twitter data access. Pricing is similar to GPT-4o.

Provider resources

Moonshot AI

Provider page Website Pricing Docs

xAI

Provider page Website Pricing Docs

Moonshot AI — Kimi — long-context frontier models from China's leading AI lab

Kimi K2 is a 1-trillion-parameter open-weight MoE model that scores competitively with Claude Sonnet on coding and agentic benchmarks.

xAI — Grok 3 — Elon Musk's frontier AI with real-time web access

Unique access to real-time X/Twitter data and web search — the only frontier model with native social media grounding.

Key strengths compared

Moonshot AI

▸Kimi K2 is a 1T MoE open-weight model with strong coding scores
▸Competitive on agentic and tool-use benchmarks
▸Long-context support up to 128K tokens

xAI

▸Real-time web access and X/Twitter data integration
▸Grok 3 Mini is a cost-efficient reasoning model
▸Strong vision capabilities on Grok 3

Provider category context

Moonshot AI is a frontier lab, founded in 2023. xAI is a frontier lab, founded in 2023. Both are frontier lab providers — the comparison is primarily about pricing, model selection, and feature differentiation within the same tier.

How to choose between them

Both Moonshot AI and xAI are frontier labs with proprietary models. Choose based on benchmark performance for your specific task: Moonshot AI leads on kimi k2 is a 1t moe open-weight model with strong coding scores, while xAI leads on real-time web access and x/twitter data integration. For cost-sensitive workloads, compare the cheapest model tier from each provider in the pricing table above — the gap between efficient-tier models is often larger than between flagship models.