AI Models · Open-Source vs Paid

GLM 5.3 Open vs RERelace Search Paid

GLM 5.3 vs Relace Search compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.

Prices & specs refreshed from live data · olud.ai

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

GLM 5.3OpenZ.AI
$0.07 /M input
$7 /M outputNo per-token fees if you self-host
TypeOpen-weight
Context window1M tokens
MultimodalNo
Self-hostYes
RERelace SearchPaidRelace
$1 /M input
$3 /M outputManaged API (no infra to run)
TypeProprietary
Context window256K tokens
MultimodalNo
Self-hostNo
Choose GLM 5.3 if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Relace Search if you want frontier capability through a managed API with zero infrastructure to run.

GLM 5.3 vs Relace Search specs

SpecGLM 5.3Relace SearchWinner
MakerZ.AIRelace–
TypeOpen-weightProprietaryGLM 5.3
Context window1M tokens256K tokensGLM 5.3
Input price$0.07/M · free self-host$1/MGLM 5.3
Output price$7/M · free self-host$3/MRERelace Search
Vision / multimodalNoNo–
Tool / function callingYesYes= Tie
Self-hostableYesNo (API only)GLM 5.3
LicenseMITProprietaryGLM 5.3

Price gap & when to choose each

2.3×cheaper per output token

Relace Search is ~2.3× cheaper than GLM 5.3 on output tokens ($3 vs $7 per M tokens).

Choose GLM 5.3 if…
  • You want to self-host or run on your cloud
  • You need the longer 1M context window
  • You prioritize data privacy & control
  • You are building open or reproducible AI
REChoose Relace Search if…
  • You want frontier performance through a managed API
  • You want the lower output price
  • You value reliability & ecosystem
  • You don't want to manage infrastructure

Feature comparison

CapabilityGLM 5.3Relace Search
Open weights (downloadable)✓✗
Self-hostable✓✗
Runs fully offline✓✗
Vision / multimodal✗✗
Tool / function calling✓✓
1M+ context window✓✗

Benchmarks: GLM 5.3 vs Relace Search

Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).

GLM 5.3
Relace Search
Intelligence index
44.8
–
Coding index
74.8
–
GPQA
91.7%
–
Humanity's Last Exam
42.3%
–
Long Context Reasoning
79.7%
–
SciCode
59%
–
τ-Bench Banking
50.3%
–
Terminal-Bench
83.9%
–
Speed
75.7 tok/s
–
Latency
2.67s
–
Intelligence per $
20.8
–

Benchmark data by Artificial Analysis.

How GLM 5.3 and Relace Search score

🏆 Best value & openness: GLM 5.3 (4.5 vs 2.8 / 5)
CriterionGLM 5.3Relace Search
Cost-efficiency4.04.0
Context window5.04.0
Openness5.01.5
Self-hosting5.01.0
Multimodality3.53.5

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

GLM 5.3 Open

Z.AI · Open-weight

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...

Relace Search Paid

Relace · Proprietary

The relace-search model uses 4-12 `view_file` and `grep` tools in parallel to explore a codebase and return relevant files to the user request. In contrast to RAG, relace-search performs agentic...

Other models in these families

These variants are tracked but not compared here — one page per family keeps the comparison readable.

Other variants tracked
GLM 5.3 (batch)GLM 5.3 FlashGLM 5.3 Flash (batch)GLM 5.2GLM 5GLM 5 TurboGLM 5.1GLM 5V TurboGLM 4.7GLM 4.6GLM 4.7 FlashGLM 4.5GLM 4.5 AirGLM 4.6VGLM 4.5VGLM 5.3 PrimeGLM 5.3 FlashX

Frequently asked questions

Is GLM 5.3 as good as Relace Search?

GLM 5.3 is open-weight and competitive on many tasks, but Relace Search may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.

Can I run GLM 5.3 locally?

Yes. GLM 5.3 has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. Relace Search is API-only and cannot be self-hosted.

GLM 5.3 vs Relace Search — which should I pick in 2026?

Choose GLM 5.3 if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Relace Search if you want frontier capability through a managed API with zero infrastructure to run.

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