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GPT-5.5Currently listed through these providers:
$10 off the fastest DeepSeek V4.1 Flash, Kimi K3.1 Pro and GLM 5.3-Flash from Synthetic
Model details
OpenAI: GPT 5.1 Thinking (Fast)
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Kilo Gatewayopenai/gpt-5.1-thinking-fastgpt
Quick Info
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- Kilo Gateway
- Model key
- openai/gpt-5.1-thinking-fast
- Release date
- Nov 12, 2025
- Last updated
- Nov 12, 2025
- Input modalities
- Output modalities
- Capabilities
Cost
- Input token cost
- $2.50
- Output token cost
- $20.00
Limits
- Output tokens
- 128,000 tokens
- Context window
- 400,000 tokens
Transparent token rates
Compare OpenAI: GPT 5.1 Thinking (Fast) pricing
Rates are shown per one million tokens. Combined means one million input plus one million output tokens.
Latest news about OpenAI: GPT 5.1 Thinking (Fast)
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