Compare

O3 vs Qwen 3.5 397B A17B

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
Qwen 3.5 397B A17B
alibaba/qwen3.5-397b-a17b
Provider
OpenAI
Alibaba
Family
o-series
Qwen
Modality
text
text
Context window
200,000 tok
262,144 tok
Max output
100,000 tok
32,768 tok
Released
2026-05-22
2026-05-22
License
Open-weight
Open-weight
Input price
$2.00 /1M
$0.600 /1M
Output price
$8.00 /1M
$3.60 /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
Qwen 3.5 397B A17B
alibaba/qwen3.5-397b-a17b
Full spec →

Alibaba's Qwen 3.5 is a 397B-parameter mixture-of-experts model with 17B active parameters, offering strong reasoning capabilities with efficient inference.

Strengths
  • MoE efficiency: 17B active of 397B
  • Strong reasoning at low cost
  • 262k context
Use cases
Production chatMulti-lingualCost-sensitive reasoning

Compare with another

Claude Opus 5 vs O3
anthropic/claude-opus-5 · openai/o3
Claude Opus 5 vs Qwen 3.5 397B A17B
anthropic/claude-opus-5 · alibaba/qwen3.5-397b-a17b
Grok 4.5 vs O3
xai/grok-4.5 · openai/o3
Grok 4.5 vs Qwen 3.5 397B A17B
xai/grok-4.5 · alibaba/qwen3.5-397b-a17b
Kimi K3 vs O3
moonshot/kimi-k3 · openai/o3
Kimi K3 vs Qwen 3.5 397B A17B
moonshot/kimi-k3 · alibaba/qwen3.5-397b-a17b
Gemini 3.6 Flash vs O3
google/gemini-3.6-flash · openai/o3
Gemini 3.6 Flash vs Qwen 3.5 397B A17B
google/gemini-3.6-flash · alibaba/qwen3.5-397b-a17b
GPT-5.6 Sol vs O3
openai/gpt-5.6-sol · openai/o3
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"}],
)

# Qwen 3.5 397B A17B
client.chat.completions.create(
    model="alibaba/qwen3.5-397b-a17b",
    messages=[{"role":"user","content":"hello"}],
)
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