xAI Grok 4 API
Frontier reasoning model API with live X data grounding
Overview
Grok 4 is xAI's frontier-class model family, offered via an OpenAI-compatible API with real-time X/Twitter data access. Distinct from the consumer Grok chatbot, priced per SKU from $0.20 to $15 per million tokens depending on model and reasoning tier.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 11 Jul 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
- Input/output per-million pricing
- Fast inference
- 1M-token context
- Function calling & structured outputs
- 1M-token context
- Reasoning and non-reasoning modes
- 256K context
- Real-time X search grounding
Use cases
What you can produce with xAI Grok 4 API
- OpenAI-compatible REST API
- Real-time X/Twitter data grounding
- Context windows up to 1M tokens (select SKUs)
- Function calling, structured outputs, configurable reasoning
- Multiple SKUs: Fast, flagship, mini, vision, legacy
- Free developer tier with data-sharing credits
- Available via Azure AI Foundry
ASEAN Perspective
xAI Grok 4 API in Southeast Asia
ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).
Grok 4 is a real frontier contender — 67.1% on SWE-bench Verified versus Grok 3's 52.4%, the largest year-over-year benchmark jump of any 2026 flagship — but it still trails Claude Opus and Gemini Pro by 4-6 points on most third-party benchmarks. The OpenAI-compatible API and 1M-token context on several SKUs make switching in easy, and real-time X search grounding is a genuine differentiator for anything tracking current events.
Reddit's developer community is less impressed than the benchmarks suggest: r/grok threads report Grok failing straightforward logic puzzles and warn against trusting benchmarks over real-world tests. Treat it as a strong, cheap option for codebase reading, debugging and high-volume API automation rather than a drop-in Claude Code or Codex replacement. Some organizations will also weigh xAI's content-moderation reputation before adopting it for regulated workloads.
What people say
Grok 4 arrived with the biggest benchmark jump of any 2026 flagship release — 67.1% on SWE-bench Verified against Grok 3's 52.4%, and 89.2% on tau-bench retail — numbers that put it in the same conversation as Claude Opus and Gemini Pro, if still 4-6 points behind them on most third-party leaderboards.
Developer sentiment on Reddit is more skeptical than the scorecard. Threads in r/grok specifically call out that the model 'can't code, not like Claude,' with multiple independent reports of Grok failing straightforward logic puzzles despite strong benchmark numbers. The community's own conclusion, repeated across threads: don't trust the benchmarks over real-world testing sessions. Where Grok 4 does earn consistent praise is as a low-cost option for codebase reading, debugging, test generation and high-volume API automation — tasks where raw throughput and price matter more than peak reasoning quality.
Pricing varies sharply by SKU, which is both a strength (cheap options exist) and a source of confusion (naming across grok-4, grok-4.20, grok-4.3 and fast variants isn't obviously ordered). Grok 4.1 Fast runs $0.20/$0.50 per million input/output tokens — among the cheapest frontier-adjacent pricing available — while the original Grok 4 flagship costs $3/$15 per million, and the current Grok 4.20 SKU sits at $2/$6. xAI's free developer tier, paired with a data-sharing program, offers up to $175/month in credits, among the more generous free allowances of any major provider.
The API itself is OpenAI-compatible, which lowers switching costs for teams already building against that interface, and several SKUs support context windows up to 1M tokens plus real-time access to X/Twitter data — a genuine differentiator for news-adjacent or current-events use cases no other frontier API offers natively. It's also available through Azure AI Foundry for enterprises that want it inside an existing Microsoft procurement relationship.
Net assessment from the developer community: strong, fast-improving, and aggressively priced at the low end, but not yet the default choice for teams whose top priority is coding reliability over cost and real-time data access.
Summary of public user & expert reviews, compiled by RECATOOLS.
About this listing
This entry was compiled from publicly available data including xAI Grok 4 API's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with xAI Grok 4 API unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
For the latest details, please refer to xAI Grok 4 API directly →
Spotted something out of date? Suggest an update →
Alternatives to xAI Grok 4 API
More in LLMs & Chat
