GPT 5.1 Codex Max

vercel/openai/gpt-5.1-codex-max · family gpt · price provider-declared (via models.dev), USD per 1M tokens. Capabilities: toolsreasoningtextimagepdf.

$3.44Blended $/1M (3:1)

$1.25Input $/1M

$10Output $/1M

$11.251M in + 1M out

$0.125 −90%Cache read $/1M

#4528 of 5,000Cheapest rank

Provider: Vercel AI Gateway (vercel)
Context: 400,000 tokens
Max output: 128,000 tokens
Capabilities: toolsreasoningtextimagepdf

Call it

jishie indexes & prices models; it does not proxy inference. Most providers are OpenAI-compatible — point base_url at Vercel AI Gateway and pass this model id:

curl $BASE_URL/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-5.1-codex-max","messages":[{"role":"user","content":"hello"}]}'

Route programmatically with MCP find_model / get_model, or fetch this record free (no wallet):