Antimatter
Baidu

ERNIE-5.5-Flash-Preview (free)

baidu/ernie-5.5-flash-preview:free

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.

Free in · Free out per 1M tokens1M contextNov 10, 2026

Free

Chat with ERNIE-5.5-Flash-Preview (free)
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Spec sheet

Published facts from the catalog, billed prices and what we measured here. Anything not measured says so.

Price, billed here

Input, per 1M tokens
$0
Output, per 1M tokens
$0
Margin
none

Context and formats

Context window
1,024,000 tokens
Longest answer
921,600 tokens
Reads
text
Makes
text
First listed
2026-11-10

Measured here, last 7 days

First token, median
not measured
Answered without error
not measured

Tools and JSON

Tool calling
declaredthe provider's claim, not yet measured here
JSON output
declaredthe provider's claim, not yet measured here

Price and latency history as JSON: GET /api/planet/history?id=baidu/ernie-5.5-flash-preview:free.

About

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...

In Baidu's words.

Try it here

The answer appears here.

Measured here

Call it

Use one OpenAI compatible endpoint, this model's id and an am_live_ key from the dashboard. You can also try it in chat first with no key.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "baidu/ernie-5.5-flash-preview:free", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

Embed this

A badge showing this model's live price per million tokens, as billed here, for a README or a site. It links back to this page.

ERNIE-5.5-Flash-Preview (free) price on Antimatter
<a href="https://useantimatter.com/planet/baidu/ernie-5.5-flash-preview%3Afree"><img src="https://useantimatter.com/api/badge/price?id=baidu%2Fernie-5.5-flash-preview%3Afree" alt="ERNIE-5.5-Flash-Preview (free) price on Antimatter" height="28"></a>

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