grok-4.3 vs grok-4.5
Side-by-side comparison of grok-4.3 and grok-4.5: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. grok-4.5 outperforms grok-4.3 on 5 of 5 shared benchmarks.
xAI Corp.
grok-4.3
Input / 1M
$1.25
Output / 1M
$2.50
Context
1M
Model ID
xai/grok-4.3
xAI Corp.
grok-4.5
Input / 1M
$2.00
Output / 1M
$6.00
Context
500K
Model ID
xai/grok-4.5
Benchmark comparison
Intelligence Indexreasoning
grok-4.337.6%
grok-4.553.8%
Coding Indexcoding
grok-4.342.2%
grok-4.572.4%
GPQA Diamondreasoning
grok-4.390.1%
grok-4.593.1%
Terminal-Bench Hardagentic
grok-4.337.9%
grok-4.5N/A
τ²-Benchagentic
grok-4.397.7%
grok-4.5N/A
SciCodecoding
grok-4.347.3%
grok-4.554.1%
Humanity's Last Examreasoning
grok-4.335.0%
grok-4.540.3%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| grok-4.3 | grok-4.5 | |
|---|---|---|
| Input price / 1M | $1.25 | $2.00 |
| Output price / 1M | $2.50 | $6.00 |
| Context window | 1M tokens | 500K tokens |
| Max output | N/A | N/A |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Prompt caching | Yes | Yes |
| Computer use | N/A | N/A |
| Provider | xAI Corp. | xAI Corp. |
Questions people ask
Is grok-4.3 better than grok-4.5?
grok-4.5 outperforms grok-4.3 on 5 of 5 shared benchmarks. See the benchmark comparison above for specifics: grok-4.3 and grok-4.5 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, grok-4.3 or grok-4.5?
grok-4.3 is cheaper. grok-4.3 costs $1.25/$2.50 per 1M input/output tokens, while grok-4.5 costs $2.00/$6.00.
Can I use grok-4.3 and grok-4.5 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch between "xai/grok-4.3" and "xai/grok-4.5", no other code changes needed.
What are the context windows?
grok-4.3 supports up to 1M tokens of context. grok-4.5 supports up to 500K tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between grok-4.3 and grok-4.5 with one line of code
Requesty provides a single OpenAI-compatible API for 400+ models. Change the model parameter, not your code.