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OpenAI logoGPT-6 Astra ProOpenAI
Best input$10.00 /MTok
Best output$50.00 /MTok
Batch in / out$5.00 / $25.00
Cache read$1.00
Measured TTFT
Measured TPS
Context1.05M
Max output128K
Modalities infile, image, text
Tool calling
Structured output
Reasoning
Vision
Audio input
Prompt caching
Providers5
Cheapest providerOpenAI
LicenseProprietary
ReleasedSep 4, 2026
Cost at your workload
● = best of the compared models · TTFT/TPS: fastest measured endpoint per model (P50, trailing 21d, chat10k) · ° = via OpenRouter routing · ✕ = probed, no measurable stream · prices are standard tier