Claude Mythos Preview vs ERNIE 5.5 Flash Preview
Claude Mythos Preview and ERNIE 5.5 Flash Preview are closely matched at 53.8 and 52.3 on the LLM Stats Score. ERNIE 5.5 Flash Preview is 101.5x cheaper per token.
Anthropic · Baidu · Updated for 2026
Which is better?
Claude Mythos Preview and ERNIE 5.5 Flash Preview are closely matched on the overall LLM Stats Score at 53.8 and 52.3.
In the 1 individual benchmarks reported for both models, ERNIE 5.5 Flash Preview wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, ERNIE 5.5 Flash Preview is roughly 101.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Mythos Preview
- you want predictable pricing at $25.00/M input and $125.00/M output
Choose ERNIE 5.5 Flash Preview
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 101.5x cheaper per token
At a glance
The differences that matter most.
Individual benchmarks
16 reported for Claude Mythos Preview · 13 for ERNIE 5.5 Flash Preview
Claude Mythos Preview outperforms in 0 benchmarks, while ERNIE 5.5 Flash Preview is better at 1 benchmark (BrowseComp).
ERNIE 5.5 Flash Preview 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, Claude Mythos Preview ($25.00/1M tokens) is 89.3x more expensive than ERNIE 5.5 Flash Preview ($0.28/1M tokens).
For output processing, Claude Mythos Preview ($125.00/1M tokens) is 110.6x more expensive than ERNIE 5.5 Flash Preview ($1.13/1M tokens).
In conclusion, Claude Mythos Preview 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
Only ERNIE 5.5 Flash Preview specifies input context (1,048,576 tokens). Only ERNIE 5.5 Flash Preview specifies output context (1,048,576 tokens).
Input capabilities
Documented input modalities across available providers
Claude Mythos Preview supports multimodal inputs, whereas ERNIE 5.5 Flash Preview does not.
Claude Mythos Preview can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Mythos Preview
ERNIE 5.5 Flash Preview
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 Claude Mythos Preview's release date is not specified.
We can confirm ERNIE 5.5 Flash Preview's release timeline, but cannot make a direct age comparison without Claude Mythos Preview's release date.
—
Nov 11, 2026
1 days ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude Mythos Preview is available from Anthropic. ERNIE 5.5 Flash Preview is available from Baidu Qianfan.
Claude Mythos Preview
ERNIE 5.5 Flash Preview
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Mythos Preview and ERNIE 5.5 Flash Preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Mythos Preview vs ERNIE 5.5 Flash Preview.