Is GPT-4o or TTS 1 cheaper?
TTS 1 is cheaper ($0.15 / 10k chars per 10k chars) vs GPT-4o ($2.50 / 1M tokens input / $10 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.
Model comparison
GPT-4o vs TTS 1
Compare GPT-4o (OpenAI) and TTS 1 (OpenAI) by price, context, capabilities, and latency.
Which should you pick?
- Price: TTS 1 is cheaper ($0.15 / 10k chars per 10k chars) vs GPT-4o ($2.50 / 1M tokens input / $10 / 1M tokens output).
- Context: GPT-4o has the larger context window (128k tokens).
- GPT-4o adds: Streaming, Tool calling, JSON mode, Vision, Long context.
Side by side
GPT-4o vs TTS 1 — full comparison
Compare price, provider, context, capabilities, latency, and source basis.
| Model | Provider | Input | Output | Context | Capabilities | Best for | Latency | Status | Source |
|---|---|---|---|---|---|---|---|---|---|
| GPT-4oopenai/gpt-4o | OpenAI | $2.50 / 1M tokens | $10 / 1M tokens | 128k | StreamingTool callingJSON modeVision | image understanding, multimodal chat | 1065-2456ms | Catalog | Platform curated |
| TTS 1openai/tts-1 | OpenAI | $0.15 / 10k chars | — | — | General chat via OpenAI, API workloads | 0-0ms | Catalog | Platform curated |
FAQ
GPT-4o vs TTS 1 FAQ
Which has a larger context window, GPT-4o or TTS 1?
GPT-4o is larger (128k tokens) vs — tokens.