Grok 4.5
- Score
- 38.8 · rank 32
- Price
- Paid
- API
- No
- Weights
- No
WHAT IT DOES
Grok 4.5 is xAI's flagship model, shipped July 8, 2026 with public rollout July 9. It has a 500K-token context window (with a high-context surcharge above 200K) and configurable reasoning effort (low/medium/high, defaulting to high). xAI trained it in partnership with Cursor specifically to handle long-running jobs across multiple repositories with minimal human intervention across hundreds of tool calls.
WHY WE PICKED IT
xAI positions it as its flagship 'for code and everything else,' and real benchmark data backs that up, 53.8% on the Artificial Analysis Intelligence Index (rank 7 overall). The Cursor training partnership is a distinctive angle: it's specifically tuned for long-horizon, multi-repository coding agent work, not just general chat.
QUICK FACTS
STRENGTHS
- ✓53.8% on the Artificial Analysis Intelligence Index (rank 7 overall)
- ✓Trained in partnership with Cursor for long-running coding agent tasks
- ✓500K-token context window
- ✓Configurable reasoning effort (low/medium/high) for cost/quality tradeoffs
- ✓Built to operate across hundreds of tool calls with minimal supervision
LIMITATIONS
- ⚠High-context surcharge above 200K tokens adds cost complexity
- ⚠Newly released, limited long-term reliability data so far
- ⚠500K context window is smaller than some competitors (e.g. GPT-5.6 Sol's 1.05M)
- ⚠Output tokens cost 3x input tokens
GETTING STARTED
Access Grok 4.5 via the xAI API or Grok apps. Pricing is $2/M input tokens, $6/M output tokens, with cached input at $0.50/M, a high-context surcharge applies above 200K tokens. Set the reasoning_effort parameter (low/medium/high) to balance cost against task difficulty; high is the default.
BENCHMARKS
QUICK TIPS
USE CASE EXAMPLES
Long-Running Multi-Repository Coding Agent
Run an autonomous coding agent across multiple repositories with minimal supervision.
- Connect Grok 4.5 to your repositories via API
- Define the overall task and constraints
- Set reasoning_effort based on task difficulty
- Let the agent execute across hundreds of tool calls
- Review checkpoints and final output
- Run tests before merging any changes
Cost-Tuned General Reasoning
Balance reasoning quality against cost using the configurable effort setting.
- Identify the task's actual difficulty
- Set reasoning_effort to match (low/medium/high)
- Run the task and review output quality
- Adjust effort level if quality doesn't meet expectations
- Track cost per task across effort levels
PRICING
Requires a paid subscription.
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EXPLORE ALTERNATIVES
Compare Grok 4.5 with 5+ similar llms AI tools.
FREQUENTLY ASKED QUESTIONS
Is Grok 4.5 free?
No, Grok 4.5 requires a paid subscription.
Does Grok 4.5 have an API?
No, Grok 4.5 does not appear to offer a public API.
What is Grok 4.5 best for?
Grok 4.5 is best for Long-Running Coding Agents. Grok 4. xAI positions it as its flagship 'for code and everything else,' and real benchmark data backs that up, 53.8% on the Artificial Analysis Intelligence Index (rank 7 overall). The Cursor training partnership is a distinctive angle: it's specifically tuned for long-horizon, multi-repository coding agent work, not just general chat.
What platforms does Grok 4.5 support?
Grok 4.5 supports web, api.
Is Grok 4.5 open source?
No, Grok 4.5 is not open source.
How do I get started with Grok 4.5?
Access Grok 4.5 via the xAI API or Grok apps. Pricing is $2/M input tokens, $6/M output tokens, with cached input at $0.50/M, a high-context surcharge applies above 200K tokens. Set the reasoning_effort parameter (low/medium/high) to balance cost against task difficulty; high is the default.
How do I use Grok 4.5?
Grok 4.5 is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses. It excels at 53.8% on the artificial analysis intelligence index (rank 7 overall).
FEATURED ON CURATEDAI
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