---
id: "baidu/ernie-5.5-flash-preview"
also: ["baidu/ernie-5.5-flash-preview-20261110", "baidu/ERNIE-5.5-Flash-Preview"]
card_usd_per_m: "0.28 in, 1.13 out, at baidu"
cheapest_list_usd_per_m: "0.28 in, 1.13 out, at baidu on openrouter"
cheapest_effective_usd_per_m: "0.053 in, 1.1229 out, at baidu on openrouter"
context: 1024000
max_output: 921600
input: ["text"]
output: ["text"]
released: "2026-11-10"
reasoning: ["high"]
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["include_reasoning", "max_tokens", "reasoning", "reasoning_effort", "response_format", "structured_outputs", "temperature", "tool_choice", "tools", "top_p"]
endpoints: 1
gateways: "openrouter (1)"
no_training: 1
trains: 0
retains_prompts: 1
---
# Baidu: ERNIE-5.5-Flash-Preview

ERNIE 5.5 Flash Preview is the latest foundation model in the ERNIE family, with comprehensive improvements in coding, agentic capabilities, knowledge work, and deep research. It has 280 billion total...