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GLM 5.3 FlashX Legal vs Auto Code

Detailed technical comparison between GLM 5.3 FlashX Legal (Zhipu AI) and Auto Code (OpenRouter). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

GLM 5.3 FlashX Legal: 0 WinsvsAuto Code: 6 Wins
Context Leader

Auto Code

2,000,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Tie

Equal Pricing
Zhipu AIactive

GLM 5.3 FlashX Legal

GLM-5.3-FlashX-Legal (GLM-Legal) is Z.ai's legal-domain variant of GLM-5.3-FlashX, a native multimodal model that accepts text, image, and video input and produces text. It adds legal-domain mid-training and post-training with reinforcement...

View GLM 5.3 FlashX Legal Full Specs →
OpenRouteractive

Auto Code

Auto Code is OpenRouter’s router built specifically for coding agents and harnesses. It uses the same routing engine as the [Auto Router](https://openrouter.ai/openrouter/auto), with every request treated as part of an...

View Auto Code Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGLM 5.3 FlashX LegalAuto Code
ProviderZhipu AIOpenRouter
Context Window1,048,576 tokens2,000,000 tokens🏆
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apimanaged api
Production StabilityNot verifiedNot verified
API AvailableYesYes
Released Date2026-11-022026-11-05

API Pricing Comparison

Input Price per Million Tokens

GLM 5.3 FlashX Legal

$0.37

Auto Code

Not listed

Output Price per Million Tokens

GLM 5.3 FlashX Legal

$1.25

Auto Code

Not listed

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
72.4%vs81.2%+8.8% Auto Code
GLM 5.3 FlashX Legal
Auto Code 🏆
HumanEvalPython coding & logic synthesis
68.6%vs91.4%+22.8% Auto Code
GLM 5.3 FlashX Legal
Auto Code 🏆
MATHComplex mathematical problem solving
41.8%vs56.6%+14.8% Auto Code
GLM 5.3 FlashX Legal
Auto Code 🏆
GPQAGraduate-level expert reasoning
29.2%vs38.6%+9.4% Auto Code
GLM 5.3 FlashX Legal
Auto Code 🏆
HellaSwagCommonsense reasoning and inference
76.4%vs80.8%+4.4% Auto Code
GLM 5.3 FlashX Legal
Auto Code 🏆
MT-BenchMulti-turn conversation flow quality
7.9%vs8.3%+0.4% Auto Code
GLM 5.3 FlashX Legal
Auto Code 🏆

GLM 5.3 FlashX Legal Quirks & Gotchas

No developer gotchas reported.

Auto Code Quirks & Gotchas

No developer gotchas reported.

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