Baidu: ERNIE-5.5-Flash-Preview (free) Free API on OpenRouter

Free API Verified

Available from OpenRouter

Catalog profile Reasoning provider catalog metadata

Flagship model for demanding analysis, coding, and production agent workflows

Free APIOpenAI compatibleReasoningTool callingJSON modeTextReasoning

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API Details

Copy-ready connection details

Use these values in your client or SDK.

Base URL

https://openrouter.ai/api/v1

Model ID

baidu/ernie-5.5-flash-preview:free

API format OpenAI Chat Completions + OpenAI Responses

Technical Details

Baidu: ERNIE-5.5-Flash-Preview (free) specifications

Provider catalog

Context window 1.0M

Max output 922K

Status Online

Released Nov 10, 2026

Last updated Nov 12, 2026

Free listing since Nov 12, 2026

Input text, reasoning

Output text

Capabilities reasoning, tool calling, structured output

AI Recommendation

Should you use Baidu: ERNIE-5.5-Flash-Preview (free)?

Baidu: ERNIE-5.5-Flash-Preview (free) is listed for chat workloads and supports a 1.0M context window.

Use it when OpenRouter's free tier is enough for evaluation, demos, or light production traffic.

Best for

Chat

Strengths & Weaknesses

Strengths

Long context window
Reasoning mode listed
Tool calling support
Structured JSON output

Watch outs

Free-tier rate limits apply
Vision support is not listed

Benchmark Overview

Benchmark signals for Baidu: ERNIE-5.5-Flash-Preview (free)

Measured data

Speed Observed generation speed

96 tok/s

Context Maximum listed context window

1.0M

Pricing

Baidu: ERNIE-5.5-Flash-Preview (free) pricing per 1M tokens

Free tier listed

Input $0 per 1M tokens

Output $0 per 1M tokens

Access Available OpenRouter

Rate limit 200 req/day (free tier) provider policy

Availability

Baidu: ERNIE-5.5-Flash-Preview (free) availability by provider

Current provider only

We only found this Baidu: ERNIE-5.5-Flash-Preview (free) listing on OpenRouter in the current catalog. Use the related models section for nearby alternatives.

Provider	Model listing	Access	Context	API	Limits
OpenRouter	Baidu: ERNIE-5.5-Flash-Preview (free)	Free tier	1.0M	OpenAI-style	200 req/day (free tier)

View OpenRouter setup guide →

Compare

Baidu: ERNIE-5.5-Flash-Preview (free) alternatives to consider

Open comparison

Model	Provider	Context	Access
Thinking Machines: Inkling 2 Small (free)	OpenRouter	1.0M	Free tier
LiquidAI: LFM3-1.7B (free)	OpenRouter	262K	Free tier
Recursive: Flint (free)	OpenRouter	262K	Free tier
NVIDIA: Nemotron 3.5 Super VL (free)	OpenRouter	1.0M	Free tier
Dots Studio: Dots3-Note Preview (free)	OpenRouter	512K	Free tier

Typical Use Cases

Baidu: ERNIE-5.5-Flash-Preview (free) use cases

Chat

Baidu: ERNIE-5.5-Flash-Preview (free) is tagged for chat in this catalog and works with OpenAI-compatible client libraries.

FAQ

Baidu: ERNIE-5.5-Flash-Preview (free) free API FAQ

Is Baidu: ERNIE-5.5-Flash-Preview (free) free to use?

Baidu: ERNIE-5.5-Flash-Preview (free) is listed with free API access on OpenRouter, subject to the provider's quota and account policy.

What is the Baidu: ERNIE-5.5-Flash-Preview (free) model ID?

The model ID shown in this catalog is baidu/ernie-5.5-flash-preview:free.

What are the Baidu: ERNIE-5.5-Flash-Preview (free) free tier rate limits on OpenRouter?

The listed free tier limit is 200 req/day (free tier). Limits can change per account tier, so confirm against the provider dashboard.

What context window does Baidu: ERNIE-5.5-Flash-Preview (free) support?

The listed context window is 1.0M tokens with up to 922K output tokens.

More about Baidu: ERNIE-5.5-Flash-Preview (free)