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Gemini 3.8 Flash vs Grok 4.6

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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Gemini 3.8 Flash
google/gemini-3.8-flash
Grok 4.6
xai/grok-4.6
Provider
Google
xAI
Family
Gemini 3
Grok 4
Modality
text
text
Context window
1,048,576 tok
500,000 tok
Max output
65,536 tok
32,768 tok
Released
2026-09-04
2026-08-12
License
Proprietary
Proprietary
Input price
$0.750 /1M
$2.00 /1M
Output price
$3.75 /1M
$6.00 /1M
Tools
yes
Streaming
yes
yes
Vision
yes
yes
JSON mode
yes
Reasoning
Prompt caching
Batch API
Try it
Open in playground →
Open in playground →
Gemini 3.8 Flash
google/gemini-3.8-flash
Full spec →

Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows
Grok 4.6
xai/grok-4.6
Full spec →

xAI's Grok 4.6, a flagship reasoning model for coding, agentic tasks, and visual work. Accepts text and image inputs, and supports function calling and structured outputs.

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

Compare with another

Grok 4.6 vs Claude Opus 4.7
xai/grok-4.6 · anthropic/claude-opus-4.7
Grok 4.6 vs GPT-5.4
xai/grok-4.6 · openai/gpt-5.4
Claude Fable 5.1 vs Gemini 3.8 Flash
anthropic/claude-fable-5.1 · google/gemini-3.8-flash
Claude Fable 5.1 vs Grok 4.6
anthropic/claude-fable-5.1 · xai/grok-4.6
Gemini 3.8 Flash vs Claude Opus 5
google/gemini-3.8-flash · anthropic/claude-opus-5
Gemini 3.8 Flash vs Glm-5.3
google/gemini-3.8-flash · zai-org/glm-5.3
Gemini 3.8 Flash vs Kimi K3
google/gemini-3.8-flash · moonshot/kimi-k3
Gemini 3.8 Flash vs Qwen3.8 Max
google/gemini-3.8-flash · alibaba/qwen3.8-max
Gemini 3.8 Flash vs Qwen3.8-27b
google/gemini-3.8-flash · qwen/qwen3.8-27b
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-...",
)

# Gemini 3.8 Flash
client.chat.completions.create(
    model="google/gemini-3.8-flash",
    messages=[{"role":"user","content":"hello"}],
)

# Grok 4.6
client.chat.completions.create(
    model="xai/grok-4.6",
    messages=[{"role":"user","content":"hello"}],
)
Get an AIgateway keyRun an eval on these →