Compare

Claude Sonnet 5 vs GLM-5.2 Fast Preview

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.

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Claude Sonnet 5
anthropic/claude-sonnet-5
GLM-5.2 Fast Preview
zai-org/glm-5.2-fast-preview
Provider
Anthropic
Z.ai
Family
Claude 4
Modality
text
text
Context window
1,000,000 tok
Max output
128,000 tok
Released
2026-07-07
2026-09-08
License
Proprietary
Open-weight
Input price
$2.00 /1M
$2.80 /1M
Output price
$10.00 /1M
$8.80 /1M
Tools
yes
yes
Streaming
yes
yes
Vision
yes
JSON mode
yes
yes
Reasoning
yes
yes
Prompt caching
Batch API
Try it
Open in playground →
Open in playground →
Claude Sonnet 5
anthropic/claude-sonnet-5
Full spec →

Claude Sonnet 5 is Anthropic's most agentic Sonnet model yet, built for coding, tool use, reasoning, and long-horizon professional work at lower cost than Opus-class models.

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

Compare with another

Claude Fable 5.1 vs Claude Sonnet 5
anthropic/claude-fable-5.1 · anthropic/claude-sonnet-5
Claude Fable 5.1 vs GLM-5.2 Fast Preview
anthropic/claude-fable-5.1 · zai-org/glm-5.2-fast-preview
Gemini 3.8 Flash vs Claude Sonnet 5
google/gemini-3.8-flash · anthropic/claude-sonnet-5
Gemini 3.8 Flash vs GLM-5.2 Fast Preview
google/gemini-3.8-flash · zai-org/glm-5.2-fast-preview
Claude Opus 5 vs Claude Sonnet 5
anthropic/claude-opus-5 · anthropic/claude-sonnet-5
Claude Opus 5 vs GLM-5.2 Fast Preview
anthropic/claude-opus-5 · zai-org/glm-5.2-fast-preview
Glm-5.3 vs Claude Sonnet 5
zai-org/glm-5.3 · anthropic/claude-sonnet-5
Glm-5.3 vs GLM-5.2 Fast Preview
zai-org/glm-5.3 · zai-org/glm-5.2-fast-preview
Grok 4.6 vs Claude Sonnet 5
xai/grok-4.6 · anthropic/claude-sonnet-5
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-...",
)

# Claude Sonnet 5
client.chat.completions.create(
    model="anthropic/claude-sonnet-5",
    messages=[{"role":"user","content":"hello"}],
)

# GLM-5.2 Fast Preview
client.chat.completions.create(
    model="zai-org/glm-5.2-fast-preview",
    messages=[{"role":"user","content":"hello"}],
)
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