OpenAI: GPT-5.1 Codex
Helicone
OpenAI: GPT-5.1 Codex by Helicone costs $1.25 per 1M input tokens and $10.00 per 1M output tokens, with a 400K-token context window.
Pricing
Input (per 1M tokens)
$1.25
Output (per 1M tokens)
$10.00
Cached input (per 1M)
$0.13
Specifications
- Provider
- Helicone
- Context window
- 400K tokens
- Parameters
- —
- Released
- Jan 2025
- Open weights
- No
- Frontier model
- No
Compare OpenAI: GPT-5.1 Codex with…
OpenAI: GPT-5.1 Codex vs OpenAI GPT-5 Nano$0.40/1MOpenAI: GPT-5.1 Codex vs Mistral-Large$6.00/1MOpenAI: GPT-5.1 Codex vs OpenAI GPT-5 Mini$2.00/1MOpenAI: GPT-5.1 Codex vs Anthropic: Claude Opus 4.5$25.00/1MOpenAI: GPT-5.1 Codex vs OpenAI GPT-4o$10.00/1MOpenAI: GPT-5.1 Codex vs Anthropic: Claude Opus 4.1$75.00/1M
FAQ
Pricing is per 1M tokens (USD); confirm with the provider before production use.