Compare

Grok 4.5 vs Grok 4.3

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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Grok 4.5
xai/grok-4.5
Grok 4.3
xai/grok-4.3
Provider
xAI
xAI
Family
Grok 4
Grok 4
Modality
text
text
Context window
500,000 tok
1,000,000 tok
Max output
32,768 tok
32,768 tok
Released
2026-07-21
2026-05-22
License
Proprietary
Proprietary
Input price
$1.00 /1M
$1.25 /1M
Output price
$1.00 /1M
$2.50 /1M
Tools
Streaming
yes
yes
Vision
yes
yes
JSON mode
Reasoning
Prompt caching
Batch API
Try it
Open in playground →
Open in playground →
Grok 4.5
xai/grok-4.5
Full spec →

xAI's Grok 4.5, a frontier model built for coding, agentic tasks, and knowledge work. Accepts text and image inputs, and supports function calling, structured outputs, and configurable reasoning effort (low, medium, high).

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows
Grok 4.3
xai/grok-4.3
Full spec →

xAI's Grok 4.3 model with a 1M-token context window and strong agentic tool calling with minimal hallucinations. Accepts text and image inputs, and supports function calling, structured outputs, and configurable reasoning effort (none, low, medium, high).

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

Claude Opus 5 vs Grok 4.5
anthropic/claude-opus-5 · xai/grok-4.5
Grok 4.5 vs Kimi K3
xai/grok-4.5 · moonshot/kimi-k3
Grok 4.5 vs Gemini 3.6 Flash
xai/grok-4.5 · google/gemini-3.6-flash
Grok 4.5 vs GPT-5.6 Sol
xai/grok-4.5 · openai/gpt-5.6-sol
Grok 4.5 vs Claude Fable 5
xai/grok-4.5 · anthropic/claude-fable-5
Grok 4.5 vs DeepSeek V4 Pro
xai/grok-4.5 · deepseek/deepseek-v4-pro
Grok 4.5 vs Gemini 3.1 Pro
xai/grok-4.5 · google/gemini-3.1-pro
Grok 4.5 vs MiniMax M3
xai/grok-4.5 · minimax/m3
Grok 4.5 vs Kimi-K2.6
xai/grok-4.5 · moonshot/kimi-k2.6
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# Grok 4.5
client.chat.completions.create(
    model="xai/grok-4.5",
    messages=[{"role":"user","content":"hello"}],
)

# Grok 4.3
client.chat.completions.create(
    model="xai/grok-4.3",
    messages=[{"role":"user","content":"hello"}],
)
Get an AIgateway keyRun an eval on these →