Anthropic vs xAI: Token Pricing, Speed & Intelligence

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

Anthropic

Claude — safety-focused frontier AI with exceptional coding ability

Anthropic builds the Claude model family, known for long context windows (up to 200K tokens), strong coding performance, and a safety-first design philosophy. Claude 4 Opus and Sonnet lead on many coding and reasoning benchmarks. Prompt caching is available at significant discounts.

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Proprietary models

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.

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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

Anthropic

Top coding benchmark scores (Claude 4 Opus)

200K context window on all Claude models

Aggressive prompt caching — up to 90% discount

Strong instruction-following and safety alignment

Extended thinking / reasoning mode on Opus

No open-weight models — full vendor lock-in

Opus is the most expensive frontier model at $15/$75 per 1M tokens

No native image generation capability

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

Anthropic

Claude 4 Opus scores highest on coding benchmarks among all frontier models, with a 200K context window and aggressive prompt caching.

xAI

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

Frequently asked questions

Anthropic FAQs

How much does the Anthropic Claude API cost?

Claude 4 Opus costs $15/1M input and $75/1M output tokens. Claude Sonnet 4.5 is $3/$15 per 1M tokens. Claude Haiku 3.5 is the budget option at $0.80/$4.00. Prompt caching reduces input costs by up to 90%.

What is the context window for Claude models?

All Claude models support a 200,000-token context window, making them ideal for processing long documents, codebases, or multi-turn conversations without truncation.

How does Anthropic prompt caching work?

Anthropic's prompt caching lets you mark portions of your prompt (system prompts, documents, tool definitions) to be cached server-side. Cached tokens are billed at 10% of the standard input price after the first write, making repeated long-context calls dramatically cheaper.

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

Anthropic

Provider page Website Pricing Docs

xAI

Provider page Website Pricing Docs

Anthropic — Claude — safety-focused frontier AI with exceptional coding ability

Claude 4 Opus scores highest on coding benchmarks among all frontier models, with a 200K context window and aggressive prompt caching.

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

Anthropic

▸Top coding benchmark scores (Claude 4 Opus)
▸200K context window on all Claude models
▸Aggressive prompt caching — up to 90% discount

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

Anthropic is a frontier lab, founded in 2021. 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 Anthropic and xAI are frontier labs with proprietary models. Choose based on benchmark performance for your specific task: Anthropic leads on top coding benchmark scores (claude 4 opus), 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.