---
title: "SpaceXAI: Grok 4.3 — price, capability and what beats it · Undominated.ai"
canonical: https://undominated.ai/models/x-ai__grok-4.3/
description: "SpaceXAI: Grok 4.3: $1.25/M in, $2.50/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper."
---

# SpaceXAI: Grok 4.3 — price, capability and what beats it · Undominated.ai

> SpaceXAI: Grok 4.3: $1.25/M in, $2.50/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper.

[Leaderboard](/) / xAI

# Grok 4.3

xAI · released 2026-04-30 · proprietary

 $1.56 per million tokens, balanced Balanced Summarise Chat Code gen Agentic

## Gemini 3.7 Flash is both better and cheaper.

It scores **+18.1** higher and costs **52% less** ($0.750/M against $1.56/M) on this workload — and it does everything this model does.

[DeepSeek V4 Flash 0731](/models/deepseek__deepseek-v4-flash-0731) is cheaper still (93% less) but drops no image, file input.

### Every price dimension

| Input | $1.25 /M |
| --- | --- |
| Output | $2.50 /M |
| Cached input | $0.200 /M |
| Web search | $0.005 /call |

**Past 200,000 tokens the price changes.** Input goes to $2.50/M (2×) and output to $5.00/M. The headline rate does not apply to a long-context workload.

### Independent scores

| Intelligence | 37.9 |
| --- | --- |
| Coding | 42.2 |
| Agentic | 24.2 |
| LMArena Elo | 1397.5 default |

Sources are listed separately rather than averaged. Across the 62 models both have scored they correlate at r = 0.806 — close agreement overall, but four models rank very differently between them, and a blended score would hide exactly those.

#### Best rankings by task

 - pptxslides #9 of 14 1071
- agentichtmlslides #10 of 16 1066
- agenticslides(html) #10 of 16 1066
- agenticslides #10 of 16 1072
- agenticslides(python-pptx) #10 of 16 1068
- agenticgamedev #20 of 34 1010
- python-pptxslides #21 of 35 1072
- htmlslides #22 of 34 1024

### Capability

| Context window | 1M |
| --- | --- |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Open weights | no |

### Provenance

| Price source | openrouter.ai |
| --- | --- |
| Fetched | 2026-08-24 |
| Quality data | verified |
| Cross-checked | vendor page |

Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...