Compare

O3 vs GLM-5.2

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

Search2/4
O3
openai/o3
GLM-5.2
zai-org/glm-5.2
Provider
OpenAI
Zai-org
Family
o-series
Modality
text
text
Context window
200,000 tok
262,144 tok
Max output
100,000 tok
131,072 tok
Released
2026-05-22
2026-07-01
License
Open-weight
Open-weight
Input price
$2.00 /1M
$1.40 /1M
Output price
$8.00 /1M
$4.40 /1M
Tools
yes
Streaming
yes
yes
Vision
JSON mode
yes
Reasoning
yes
Prompt caching
Batch API
Try it
Open in playground →
Open in playground →
O3
openai/o3
Full spec →

o3 is OpenAI’s general-purpose reasoning model, balancing strong analytical performance with reasonable latency and cost.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows
GLM-5.2
zai-org/glm-5.2
Full spec →

Z.ai's flagship agentic coding model

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

Grok 4.6 vs GLM-5.2
xai/grok-4.6 · zai-org/glm-5.2
Grok 4.6 vs O3
xai/grok-4.6 · openai/o3
Claude Opus 5 vs GLM-5.2
anthropic/claude-opus-5 · zai-org/glm-5.2
Claude Opus 5 vs O3
anthropic/claude-opus-5 · openai/o3
Qwen3.8 Max vs GLM-5.2
alibaba/qwen3.8-max · zai-org/glm-5.2
Qwen3.8 Max vs O3
alibaba/qwen3.8-max · openai/o3
DeepSeek V4 Pro vs GLM-5.2
deepseek/deepseek-v4-pro · zai-org/glm-5.2
DeepSeek V4 Pro vs O3
deepseek/deepseek-v4-pro · openai/o3
Kimi K3 vs GLM-5.2
moonshot/kimi-k3 · zai-org/glm-5.2
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# O3
client.chat.completions.create(
    model="openai/o3",
    messages=[{"role":"user","content":"hello"}],
)

# GLM-5.2
client.chat.completions.create(
    model="zai-org/glm-5.2",
    messages=[{"role":"user","content":"hello"}],
)
Get an AIgateway keyRun an eval on these →