jishie

GPT-5.1 Codex

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

$3.44Blended $/1M (3:1)
$1.25Input $/1M
$10Output $/1M
$11.251M in + 1M out
$0.13 −90%Cache read $/1M
#4535 of 5,000Cheapest rank
Provider
OpenRouter (openrouter)
Context
400,000 tokens
Max output
128,000 tokens
Capabilities
toolsreasoningtextimage

Same model, other providers

“GPT-5.1 Codex” is offered by 9 providers — cheapest-effective first. OpenCode Zen is the cheapest at $2.93 blended.

ProviderInputOutputBlendedContext
OpenCode Zen$1.07$8.5$2.93400k
OpenRouter (this)$1.25$10$3.44400k
Impossibl$1.25$10$3.44400k
Vivgrid$1.25$10$3.44400k
LLM Gateway$1.25$10$3.44400k
Abacus$1.25$10$3.44400k
Azure Cognitive Services$1.25$10$3.44400k
Azure$1.25$10$3.44400k
AIHubMix$1.25$10$3.44400k

Call it

jishie indexes & prices models; it does not proxy inference. Most providers are OpenAI-compatible — point base_url at OpenRouter 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","messages":[{"role":"user","content":"hello"}]}'

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