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Gemini 3.8 Flash TTS vs Gemini 4 Argon

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 TTS
google/gemini-3.8-flash-tts
Gemini 4 Argon
google/gemini-4-argon
Provider
Google
Google
Family
Gemini 3
Modality
audio-tts
text
Context window
—
1,048,576 tok
Max output
—
65,536 tok
Released
2026-10-06
2026-10-14
License
Proprietary
Proprietary
Input price
—
$2.00 /1M
Output price
—
$10.00 /1M
Per 1K chars
$0.015 /1K ch
—
Tools
yes
—
Streaming
—
yes
Vision
yes
—
JSON mode
yes
—
Reasoning
—
—
Prompt caching
—
—
Batch API
—
—
Try it
View model →
Open in playground →
Gemini 3.8 Flash TTS
google/gemini-3.8-flash-tts
Full spec →

Gemini 3.8 Flash TTS is Google's flagship text-to-speech model for expressive, natural speech generation.

Strengths
  • Natural speech synthesis
Use cases
VoiceoversIVRAudiobooks
Gemini 4 Argon
google/gemini-4-argon
Full spec →

Google's frontier model for deep work on complex, real-world tasks across coding, finance, legal, cybersecurity and science. The first model in the Gemini 4 family.

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

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Gemini 4 Argon vs Qwen3.8-Max
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Gemini 4 Argon vs GPT-5.6 Sol
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Gemini 4 Argon vs Qwen3.8-27b
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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 TTS
client.chat.completions.create(
    model="google/gemini-3.8-flash-tts",
    messages=[{"role":"user","content":"hello"}],
)

# Gemini 4 Argon
client.chat.completions.create(
    model="google/gemini-4-argon",
    messages=[{"role":"user","content":"hello"}],
)
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