--- title: xAI slug: xai url: "https://toolweight.com/tools/xai" homepage: "https://x.ai" categories: llm-apis last_verified: 2026-11-07 dataset_version: 0738be72 license: CC-BY-4.0 --- # xAI > Grok models with an OpenAI-shaped API and live X data access - Grok family via an OpenAI-shaped API, so porting is close to a base-URL change - Differentiators: real-time access to X/Twitter content and aggressive fast-tier pricing - Thinner enterprise story: less published governance, fewer regions, shorter deprecation track record ## Identity | | | | --- | --- | | Name | xAI | | Company | xAI | | One-liner | Grok models with an OpenAI-shaped API and live X data access | | Site | https://x.ai | | Docs | https://docs.x.ai | | Founded | 2023 | | Funding | Late-stage private | | Open source | No | | Compared in | 1 | ## Where it is compared ### [LLM APIs](https://toolweight.com/compare/llm-apis) Ranked **#7 of 18** on default weights. | Field | Value | Confidence | Verified | Source | Note | Permalink | | --- | --- | --- | --- | --- | --- | --- | | Flagship model | Grok 4.5 (grok-4.5) | Vendor-claimed | 2026-07-30 | https://docs.x.ai/developers/models | xAI's most intelligent and fastest model, recommended for code and chat; knowledge cutoff 2026-02-01. xAI ships fast and renames tiers often, so confirm the current model list before quoting. | https://toolweight.com/compare/llm-apis#xai--flagship_model | | Context window | 500,000 tokens | Vendor-claimed | 2026-07-30 | https://docs.x.ai/developers/grok-4-5 | - | https://toolweight.com/compare/llm-apis#xai--context_window | | Max output | Unlimited | Vendor-claimed | 2026-11-07 | https://docs.x.ai/developers/grok-4-7.md | - | https://toolweight.com/compare/llm-apis#xai--max_output | | Image input | ● | Vendor-claimed | 2026-07-30 | https://docs.x.ai/developers/models | Text and image input (images up to 20 MiB, jpg/png). | https://toolweight.com/compare/llm-apis#xai--vision | | Audio in/out | ◐ | Vendor-claimed | 2026-07-30 | https://docs.x.ai/developers/models | grok-4.5 is text/image in, text out; audio is the separate Grok Voice API — a sibling model line, which this column grades as partial. | https://toolweight.com/compare/llm-apis#xai--audio_io | | Open weights | ◐ | Community-reported | 2026-01-15 | - | Older Grok generations have been released publicly; current models are closed. | https://toolweight.com/compare/llm-apis#xai--open_weights | | OpenAI-compat API | ● | Vendor-claimed | 2026-07-30 | https://docs.x.ai/overview | Deliberately shaped as a drop-in for the OpenAI SDKs: point the OpenAI client at api.x.ai/v1. | https://toolweight.com/compare/llm-apis#xai--openai_compatible | | TTFT p50 | - | Unknown | - | - | - | https://toolweight.com/compare/llm-apis#xai--ttft_p50 | | Output tok/s | - | Unknown | - | - | - | https://toolweight.com/compare/llm-apis#xai--throughput_tps | | $/M input | $2/M tok | Vendor-claimed | 2026-11-06 | https://docs.x.ai/docs/models | - | https://toolweight.com/compare/llm-apis#xai--price_in | | $/M output | $6/M tok | Vendor-claimed | 2026-11-06 | https://docs.x.ai/docs/models | - | https://toolweight.com/compare/llm-apis#xai--price_out | | $/M cache read | $0.3/M tok | Vendor-claimed | 2026-07-30 | https://docs.x.ai/developers/pricing | Automatic caching; $0.60/M at the ≥200K tier. | https://toolweight.com/compare/llm-apis#xai--cached_input | | Batch discount | 20% | Vendor-claimed | 2026-11-07 | https://docs.x.ai/developers/pricing.md | - | https://toolweight.com/compare/llm-apis#xai--batch_discount | | Tool use | ● | Vendor-claimed | 2026-07-30 | https://docs.x.ai/developers/models | Custom tools with parallel calling by default, plus built-in web and X search. | https://toolweight.com/compare/llm-apis#xai--tool_use | | Schema output | ● | Inferred | 2026-01-15 | - | - | https://toolweight.com/compare/llm-apis#xai--structured_output | | Effort control | ◐ | Inferred | 2026-01-15 | - | Reasoning is exposed on specific model variants rather than as a graduated per-request control across the line-up. | https://toolweight.com/compare/llm-apis#xai--reasoning_effort | | Computer use | ○ | Inferred | 2026-01-15 | - | - | https://toolweight.com/compare/llm-apis#xai--computer_use | | MCP support | ○ | Inferred | 2026-01-15 | - | - | https://toolweight.com/compare/llm-apis#xai--mcp_support | | Cache TTL | - | Unknown | - | - | - | https://toolweight.com/compare/llm-apis#xai--prompt_cache_ttl | | Continuity policy | Dated model IDs exist and are the recommended way to address a model, but xAI publishes no formal deprecation policy or notice window, and model naming has changed repeatedly between generations. The shortest track record of any first-party lab here. | Inferred | 2026-01-15 | - | - | https://toolweight.com/compare/llm-apis#xai--continuity_policy | | Notice period | - | Unknown | - | - | No published policy located. | https://toolweight.com/compare/llm-apis#xai--deprecation_notice | | Pinnable versions | ● | Inferred | 2026-01-15 | - | - | https://toolweight.com/compare/llm-apis#xai--pinned_snapshots | | Zero retention | ◐ | Vendor-claimed | 2026-11-07 | https://docs.x.ai/developers/faq/security | - | https://toolweight.com/compare/llm-apis#xai--zero_retention | | Trains on your data | ◐ | Inferred | 2026-01-15 | - | Consumer terms are permissive; API terms are stricter but read them rather than assuming parity with OpenAI or Anthropic. | https://toolweight.com/compare/llm-apis#xai--trains_on_data | | AU region | ○ | Inferred | 2026-01-15 | - | - | https://toolweight.com/compare/llm-apis#xai--au_region | | API since | 2024 | Inferred | - | - | - | https://toolweight.com/compare/llm-apis#xai--launch_year | | Positioning | Fast, cheap frontier models with live access to X | Inferred | - | - | - | https://toolweight.com/compare/llm-apis#xai--positioning | **Verdict.** Easy to try and strong on price-performance, but the thinnest governance here, so fine for consumer, hard for regulated work. ## Alternatives - [Qwen](https://toolweight.com/tools/alibaba-qwen), Alibaba's model family, huge open-weight range, closed flagship - [Amazon Bedrock](https://toolweight.com/tools/amazon-bedrock), Multi-vendor model access inside your existing AWS account - [Anthropic](https://toolweight.com/tools/anthropic), Claude models, built around long agentic runs and tool use - [Cerebras](https://toolweight.com/tools/cerebras), Wafer-scale inference, the fastest tokens per second available - [Cohere](https://toolweight.com/tools/cohere), Enterprise-focused models built for RAG and private deployment - [DeepSeek](https://toolweight.com/tools/deepseek), Frontier-adjacent models at a small fraction of Western prices - [Fireworks AI](https://toolweight.com/tools/fireworks-ai), Fast open-weight inference with strong structured-output support - [Google Gemini](https://toolweight.com/tools/google-gemini), Gemini via AI Studio for prototyping or Vertex AI for production - [Groq](https://toolweight.com/tools/groq), Custom LPU silicon serving open-weight models at extreme speed - [Meta Llama](https://toolweight.com/tools/meta-llama), Open-weight Llama models, hosted almost everywhere but Meta - [Mistral AI](https://toolweight.com/tools/mistral-ai), European lab with an open-weight lineage and EU-resident hosting - [Moonshot AI](https://toolweight.com/tools/moonshot-ai), Kimi models, open-weight agentic performance at low cost ## Logo & brand colours SVG files: https://toolweight.com/teams/xai/logo.svg and https://toolweight.com/teams/xai/mono.svg. 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