ERNIE 5.5 Flash Preview vs GPT-6 Astra
ERNIE 5.5 Flash Preview and GPT-6 Astra are closely matched at 52.3 and 56.6 on the LLM Stats Score. ERNIE 5.5 Flash Preview is 40.6x cheaper per token.
Baidu · OpenAI · Updated for 2026
Which is better?
ERNIE 5.5 Flash Preview and GPT-6 Astra are closely matched on the overall LLM Stats Score at 52.3 and 56.6.
In the 6 individual benchmarks reported for both models, GPT-6 Astra wins 5; this is a narrower head-to-head signal than the composite indexes.
On price, ERNIE 5.5 Flash Preview is roughly 40.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-6 Astra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose ERNIE 5.5 Flash Preview
- cost matters — it's about 40.6x cheaper per token
- you want the most recent training data — it shipped Nov 2026
Choose GPT-6 Astra
- you value its reported benchmark strengths — it wins 5 of 6 exact shared results
- you process long inputs — it offers a 1,050,000 token context window
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
13 reported for ERNIE 5.5 Flash Preview · 23 for GPT-6 Astra
ERNIE 5.5 Flash Preview outperforms in 1 benchmarks (AutomationBench), while GPT-6 Astra is better at 5 benchmarks (Agents' Last Exam, BrowseComp, DeepSWE 1.1, Terminal-Bench 4.0, Terminal-Bench-Science 0.1).
GPT-6 Astra significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, ERNIE 5.5 Flash Preview ($0.28/1M tokens) is 35.7x cheaper than GPT-6 Astra ($10.00/1M tokens).
For output processing, ERNIE 5.5 Flash Preview ($1.13/1M tokens) is 44.2x cheaper than GPT-6 Astra ($50.00/1M tokens).
In conclusion, GPT-6 Astra is more expensive than ERNIE 5.5 Flash Preview.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6 Astra accepts 1,050,000 input tokens compared to ERNIE 5.5 Flash Preview's 1,048,576 tokens. ERNIE 5.5 Flash Preview can generate longer responses up to 1,048,576 tokens, while GPT-6 Astra is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
GPT-6 Astra supports multimodal inputs, whereas ERNIE 5.5 Flash Preview does not.
GPT-6 Astra can handle both text and other forms of data like images, making it suitable for multimodal applications.
ERNIE 5.5 Flash Preview
GPT-6 Astra
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
ERNIE 5.5 Flash Preview was released on 2026-11-11, while GPT-6 Astra was released on 2026-09-04.
ERNIE 5.5 Flash Preview is 2 months newer than GPT-6 Astra.
Nov 11, 2026
1 days ago
2mo newerSep 4, 2026
2 months ago
Knowledge Cutoff
When training data ends
GPT-6 Astra has a documented knowledge cutoff of 2026-04-30, while ERNIE 5.5 Flash Preview's cutoff date is not specified.
We can confirm GPT-6 Astra's training data extends to 2026-04-30, but cannot make a direct comparison without ERNIE 5.5 Flash Preview's cutoff date.
—
Apr 2026
Provider Availability
ERNIE 5.5 Flash Preview is available from Baidu Qianfan. GPT-6 Astra is available from OpenAI.
ERNIE 5.5 Flash Preview
GPT-6 Astra
Outputs Comparison
Judge for yourself.
Run your own prompts against ERNIE 5.5 Flash Preview and GPT-6 Astra side-by-side, then vote on the output you prefer.
FAQ
Common questions about ERNIE 5.5 Flash Preview vs GPT-6 Astra.