Compare models
GPT-4o Mini Transcribe
Speech-to-text model powered by GPT-4o Mini
Performance
Speed
Input
Output
Reasoning tokens
Pricing
Audio tokens
Input / 1M tokens
$1.25
Output / 1M tokens
$5.00
Cached input / 1M tokens
-
Cache writes / 1M tokens
-
Context
Window
16,000
Max Output Tokens
2,000
Knowledge Cutoff
Jun 01, 2024
Endpoints
v1/chat/completions
v1/responses
v1/realtime
v1/batch
v1/audio/transcriptions
Supported Features
Streaming
Function calling
Structured outputs
Image input
Rate Limits
TPM
Free
-
Build
150,000
Launch
2,000,000
Grow
8,000,000
GPT-6 Astra
Our most capable model for the most demanding work.
Reasoning
Speed
Input
Output
Reasoning tokens
Pricing
Text tokens
Input / 1M tokens
$10.00
Output / 1M tokens
$50.00
Cached input / 1M tokens
$1.00
Cache writes / 1M tokens
$12.50
Context
Window
1,050,000
Max Output Tokens
128,000
Knowledge Cutoff
Apr 30, 2026
Endpoints
v1/chat/completions
v1/responses
v1/realtime
v1/batch
v1/audio/transcriptions
Supported Features
Streaming
Function calling
Structured outputs
Image input
Rate Limits
TPM
Free
-
Build
1,000,000
Launch
4,000,000
Grow
40,000,000