SpaceXAI: Grok 4.3
The SpaceXAI: Grok 4.3 is a large language model developed by x-ai that can handle various input modalities, including text, images, and files. It has a context length of 1 million tokens and supports tools and reasoning capabilities, but does not provide structured output. For users with high input token requirements and moderate output demands, the SpaceXAI: Grok 4.3 may be worth considering due to its competitive price point. At $1.25 per million input tokens and $2.5 per million output tokens, it could prove cost-effective for tasks that involve extensive data processing. However, with a blended benchmark score of 39.3 across one independent benchmark, further evaluation is necessary to determine its overall performance compared to other models on the market.
Benchmark results
Independent, published benchmarks. Blended score 39.3 across 1 benchmark, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 41.1 |
- Model ID
- x-ai/grok-4.3
- Vendor
- x-ai
- Released
- April 2026
- Tokenizer
- Grok
- Input Modalities
- text, image, file
- Output Modalities
- text
- Max Output
- 900,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $1.25/M input and $2.50/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.04 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.75 |
| A month of a busy support chatbot | 5M in / 2M out | $11.25 |
Similar models
SpaceXAI: Grok 4.7
SpaceXAI: Grok 4.6
SpaceXAI: Grok 4.5
SpaceXAI: Grok Build 0.1
SpaceXAI: Grok 4.3 (batch)
SpaceXAI: Grok 4.20
Quick answers
- How much does SpaceXAI: Grok 4.3 cost?
- $1.25 per million input tokens and $2.50 per million output tokens.
- What is SpaceXAI: Grok 4.3's context window?
- 1,000,000 tokens, roughly 1,500 pages of text in a single request.
- Does SpaceXAI: Grok 4.3 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can SpaceXAI: Grok 4.3 process images?
- Yes, it accepts image input.