#148 Grok 4.1 Fast
none
Grok 4.1 Fast is deprecated. xAI recommends switching to Grok 4.3 (https://openrouter.ai/x-ai/grok-4.3)
- Cost
- $0.000
- Time
- 0.1s
- Tokens
- 0 tok
Summary
Grok 4.1 Fast scores 4.4 on AI BENCHY and ranks #148. It has 10.0 reliability, a 22.8% pass rate, $0.009 total cost, and 1.67s average response time.
What makes Grok 4.1 Fast unique: It stands out most in Coding, where it ranks #1, while Instructions following is its weakest area at #14.
Archived model: this model is no longer updated or tested on new tests.
4.4
Consistency
8.8
10.0
$0.009
Total Output Tokens
1,733
Total Input Tokens
0
Input Price
$0.000 / 1M
Output Price
$0.000 / 1M
Flaky tests
3
Flaky tests had mixed outcomes across runs (at least one pass and one fail).
Generation showcase
Hamster playing table tennis
Prompt: Create a detailed SVG illustration of a hamster playing table tennis.
Run history
| Tested on | Score | Reliability | Tests Correct | Total Cost | Compare |
|---|---|---|---|---|---|
| 2026-05-08 13:50 Re-test | 4.4 | 10.0 | $0.008 ↓ | Compare | |
| 2026-05-08 13:50 Re-test | 4.4 | 10.0 | $0.009 | Compare | |
| 2026-05-08 13:50 Suite changed | 4.4 | 10.0 | $0.009 | Current run | |
| 2026-04-11 01:44 First recorded run | 4.5 | N/A | $0.009 | Compare |
This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.
Run comparison
| Run | Score | Consistency | Reliability | Tests Correct | Flaky tests | Total Output Tokens | Total Input Tokens | Total Cost | Response Time (avg) |
|---|---|---|---|---|---|---|---|---|---|
| 2026-05-08 13:50 · Suite changed | 4.4 | 8.8 | 10.0 | 3/19 | 3 | 1,733 | 0 | $0.009 | 1.67s |
| 2026-04-11 01:44 · First recorded run | 4.5 | 8.7 | N/A | 3/18 | 3 | 1,721 | 0 | $0.009 | 1.76s |
| Difference | -0.1 | +0.1 | 0 | 0 | +12 | 0 | +$0.001 | -86ms |
These two runs used different benchmark suites, so the deltas reflect both model changes and suite changes.
Charts
Choose the first model, then click a second model to open a side-by-side page.
Top Models by Score
Score vs Total Cost
Response Time (avg)
Score vs Response Time (avg)
Total Output Tokens
Score vs Total Output Tokens
Quick Compare
Category Breakdown
| Category | Score | Consistency | Tests Correct |
|---|---|---|---|
| Anti-AI Tricks | 3.2 | 10.0 | |
| Coding | 5.3 | 3.4 | |
| Combined | 3.0 | 10.0 | |
| Data parsing and extraction | 10.0 | 10.0 | |
| Domain specific | 5.9 | 7.2 | |
| General Intelligence | 4.4 | 9.9 | |
| Instructions following | 3.0 | 10.0 | |
| Puzzle Solving | 3.0 | 10.0 | |
| Tool Calling | 2.8 | 1.6 | |
| Trivia | 3.0 | 10.0 |