SpaceXAI: Grok 4.3
This AI model, developed by x-ai, is known as SpaceXAI: Grok 4.3. It supports multiple input modalities, including text, image, and file inputs, allowing for flexibility in the types of data it can process. The model has a large context length of 1 million tokens, indicating its ability to handle extended passages or conversations. For users who need a versatile AI tool that can handle complex tasks and varied input formats, SpaceXAI: Grok 4.3 may be worth considering. Its price point is $2.5 per million output tokens, with an additional $1.25 per million input tokens. While its benchmark blended score is 42.7 across one independent evaluation, this model's performance in specific tasks or applications remains to be seen, and users should evaluate its suitability based on their needs and priorities.
Benchmark results
Independent, published benchmarks. Blended score 39.3 across 1 benchmark, last refreshed 2026-09-23. 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.