Grok 4.5 is the newest frontier model from xAI, launched on July 8, 2026. The short version: it is built for coding, agentic tasks, and knowledge work, with API pricing at $2 per million input tokens and $6 per million output tokens. xAI also says there is limited-time free access in Grok Build and Cursor.
The important question is not "is Grok 4.5 smart?" It is: where should you actually use it instead of GPT, Claude, Gemini, or older Grok models?
Oakgen's chat lets you switch between major AI models in one workspace, so you can compare outputs instead of guessing from launch claims. Start with the same prompt in Grok 4.5, GPT, Claude, and Gemini models, then keep the one that wins your task.
Grok 4.5 at a glance
| Question | Current answer as of July 9, 2026 | What it means |
|---|---|---|
| What is it? | xAI's frontier model for code, agents, and knowledge work | Most relevant for builders, analysts, and teams doing complex workflows |
| API model name | grok-4.5 | Use this exact model string in xAI API calls |
| API price | $2 input / $6 output per 1M tokens | Aggressive pricing for a flagship model |
| Context window | 500K tokens in xAI model docs | Useful for large repos, documents, and long agent traces |
| Reasoning | Low, medium, or high | Teams can tune cost and depth by task |
| Where to use it | xAI API, Grok Build, Cursor, Office add-ins, model gateways, Oakgen via OpenRouter | It is aimed at production work, not only consumer chat |
| Free access | Limited-time free usage in Grok Build and Cursor | Good for testing, but do not build a workflow assuming free access stays forever |
What changed with Grok 4.5?
xAI is positioning Grok 4.5 less like a casual chatbot upgrade and more like a work model. The official launch page says it was built for coding, agentic tasks, and knowledge work, and that it was trained alongside Cursor.
That matters because the strongest AI use cases in 2026 are not one-shot answers. They are multi-step workflows:
- read a repo, find the bug, patch the files, and explain the change
- inspect a spreadsheet, build a model, and leave notes for a teammate
- research a messy topic, compare sources, and write a decision memo
- run an agent loop where the model calls tools, reads outputs, and keeps going
Grok 4.5 is clearly being marketed at that tier of work. xAI's launch examples focus on end-to-end app building, engineering benchmarks, office work, and token efficiency rather than casual chat personality.
Is Grok 4.5 free?
Partly, and this is where search results are going to get messy.
xAI's launch post says it is offering free Grok 4.5 usage for a limited time in Grok Build and Cursor. That is not the same as "unlimited free Grok 4.5 forever." It is a launch window offer.
The broader xAI pricing page also lists a Free plan for Grok with generous limits, while the SuperGrok plan is listed at $30/month and includes Grok 4.5 with higher rate limits and frontier-model access.
So the practical answer is:
- if you want to try Grok 4.5 for coding, start with Grok Build or Cursor while the free launch access exists
- if you need reliable higher limits in Grok apps, expect the paid plan to matter
- if you are a developer, the API is pay-per-token at the official token rates
Here is where this breaks: free access is usually the first thing that changes after launch demand spikes. If you are writing internal docs or planning production workflows, phrase it as "limited-time free access" and re-check xAI's pricing page before publishing anything customer-facing.
Grok 4.5 API pricing
The official xAI docs list Grok 4.5 at:
| Item | Price or setting |
|------|------------------|
| Model name | grok-4.5 |
| Input price | $2.00 per 1M tokens |
| Output price | $6.00 per 1M tokens |
| Context | 500K tokens |
| Reasoning | Low, medium, high |
| APIs | Responses API, Chat Completions |
| Tools | Function calling, web search, X search, code execution |
That pricing is the main reason Grok 4.5 will get attention from developers. The output price is low enough that teams can test it for code review, task decomposition, large document analysis, and agent loops without immediately hitting Claude Opus-style spend.
The hidden cost variable is reasoning and token efficiency. xAI claims Grok 4.5 runs at 80 tokens per second and uses far fewer output tokens on some engineering tasks than a comparable Opus model. Treat that as a claim to test, not a guarantee for your workload. A model that emits fewer tokens can be cheaper even when headline token pricing looks similar.
Where Grok 4.5 looks strongest
1. Coding and software engineering
This is the obvious first use case. xAI's benchmark section compares Grok 4.5 against leading models on engineering evals such as DeepSWE, SWE Marathon, Terminal Bench, and SWE Bench Pro.
The sober read: Grok 4.5 is not presented as winning every chart. It is presented as being competitive while being fast and cost-efficient. That is often enough for real teams.
I would test it on:
- bug fixing with a small failing test suite
- repo understanding across many files
- refactoring with specific constraints
- terminal-heavy tasks where the model has to read command output
- agentic workflows in Cursor or Grok Build
I would not blindly move a production coding workflow over from Claude or GPT based on launch charts. Run the same five tasks through each model and compare: correct patch rate, number of tool calls, time to completion, and whether a human reviewer trusts the diff.
2. Agentic work
Grok 4.5 supports function calling, web search, X search, and code execution in the xAI ecosystem. That makes it a candidate for workflows where the model has to do more than answer.
Good agentic tasks look like:
- "Research these five companies, build a comparison table, and cite sources."
- "Audit this landing page against the brief and open issues for each blocker."
- "Turn these customer interviews into a pricing-page rewrite."
- "Read the API logs and identify the highest-likelihood bug."
The mistake is using a frontier model for every tiny step. A better workflow is to route: fast cheap models for extraction and formatting, stronger models for judgment and final synthesis.
3. Office and knowledge work
xAI is pushing Grok 4.5 into Office-style work: Excel models, PowerPoint decks, Word documents, research, formulas, diagrams, and notes. That is a real buyer-intent lane because many people do not search "AI model benchmark." They search "AI for Excel model" or "AI PowerPoint assistant."
This cluster should not only chase developer searches. The office-work angle gives us longtail posts like:
- Grok 4.5 for Excel models
- Grok 4.5 for PowerPoint decks
- Grok 4.5 for research reports
- Grok 4.5 for business analysts
Those will probably be easier to rank than the head term.
Grok 4.5 vs GPT, Claude, and Gemini
The short answer: do not choose by brand. Choose by job.
| Use case | First model to test | Why | |----------|---------------------|-----| | Agentic coding in Cursor | Grok 4.5, Claude, GPT | Grok 4.5 is directly positioned for coding and Cursor access | | Careful writing and editing | Claude | Claude still tends to win on prose judgment and tone | | Fresh web research | Gemini or Grok with search | Gemini has search strength; Grok has X search strength | | Low-cost frontier API testing | Grok 4.5 | $2/$6 per 1M tokens is attractive for builders | | Multi-modal creative production | A multi-model workflow | Chat, image, video, and voice often need different models |
If you are a founder or marketer, this is why a one-model workflow ages badly. Grok 4.5 may be great for debugging a landing-page analytics bug, while Claude may write the better launch email, Gemini may research competitors faster, and an image model may generate the ad creative.
The simplest benchmark is your own work. Put the same prompt into Grok, GPT, Claude, and Gemini, then judge the output by usefulness, not model hype. Oakgen is built around that multi-model workflow. Try Grok 4.5 in Oakgen.
Best prompts to test Grok 4.5
Use prompts that expose whether the model can keep context, use tools, and make decisions.
Coding test prompt
You are working in this repository. Find the bug causing [specific symptom], explain the likely root cause, make the smallest safe patch, and add or update one test that would fail before the fix.
Agentic research prompt
Research Grok 4.5, Claude Opus, GPT-5.5, and Gemini 3.5 for agentic coding. Build a comparison table with pricing, context, strengths, weaknesses, and best-fit use cases. Cite official sources where possible and mark uncertain claims.
Business analyst prompt
Turn this messy quarterly notes document into a CFO-ready summary. Create a 5-slide outline, a risks table, and a list of follow-up questions. Keep claims grounded in the source text.
Marketing workflow prompt
Given this product page and five customer reviews, create 10 ad hooks, 5 short video scripts, and 3 image prompts. Separate claims we can prove from claims that need evidence.
The last prompt is especially useful for Oakgen users. Use one model to reason through the message, then send the winning hooks into Oakgen's image, video, voice, or UGC workflows.
Should you use Grok 4.5?
Use Grok 4.5 if:
- you care about coding, agents, or technical knowledge work
- you want a lower-cost frontier API to test against GPT and Claude
- you use Cursor or want to try Grok Build during the free launch window
- your workflow benefits from X search or web-connected tool use
- you need a 500K-token context window
Wait or benchmark first if:
- you mainly need polished long-form writing
- your current Claude or GPT coding workflow is already reliable
- you work in the EU and need API console access immediately
- you need stable pricing and availability for a production workflow
- you are comparing models for creative output rather than coding or analysis
My practical recommendation: treat Grok 4.5 as a model to add to your benchmark set, not as a reason to rebuild your stack overnight.
The bottom line
Grok 4.5 is a serious launch because it combines three things buyers care about: strong coding positioning, broad agentic-work capabilities, and aggressive API pricing. The free launch access in Grok Build and Cursor will drive a lot of searches, but the durable story is the cost-performance angle for developers and teams.
For Oakgen users, the bigger lesson is the same one we keep seeing across AI in 2026: no single model wins every job. Use Grok-family models when they win the task, use GPT or Claude where they are stronger, and keep the workflow flexible enough to switch.
Use Oakgen when you want one workspace for AI chat, creative generation, and model comparison. Start with Grok 4.5 or the model that gives the best answer, then turn that answer into images, videos, scripts, or campaign assets without rebuilding the workflow.
Sources and further reading
- xAI announcement: Introducing Grok 4.5
- xAI docs: Grok 4.5
- xAI docs: model list and pricing details
- xAI pricing page
- Cursor announcement: Introducing Grok 4.5
Frequently asked questions
What is Grok 4.5? Grok 4.5 is xAI's frontier model for coding, agentic tasks, and knowledge work. It launched on July 8, 2026.
Is Grok 4.5 free? xAI says there is limited-time free usage in Grok Build and Cursor. For broader Grok app usage and higher limits, check the current xAI pricing page.
How much does Grok 4.5 cost through the API? The official docs list the API at $2 per million input tokens and $6 per million output tokens.
What is the Grok 4.5 context window? xAI's model docs list Grok 4.5 with a 500K-token context window.
Is Grok 4.5 better than Claude? Not universally. Grok 4.5 looks compelling for coding, speed, cost, and agentic work. Claude may still be better for careful writing, review, and some coding workflows. Test both on your own task.
Is Grok 4.5 better than GPT? It depends on the job. Grok 4.5 has an aggressive coding and API-cost story. GPT may still win on general product polish, multimodal workflows, or tasks where your team already has strong prompts and tooling.
Can I use Grok 4.5 in Cursor? Yes. Cursor says Grok 4.5 is available in Cursor, and xAI says it is available on all Cursor plans at launch.
Can I use Grok 4.5 in the EU? At launch, xAI said Grok 4.5 was not yet available in EU API console products, with availability expected in mid-July 2026.
