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GPT 5.1 Codex Max vs Qwen3.8 Max (0902)

At a glance

Extended-context coding model for large codebase operations.

400K ctx$1.25/$10.00 per M

Alibaba's updated Qwen3.8 Max flagship snapshot, post-trained for coding and agentic work.

1M ctx$2.00/$6.00 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Agentic
Terminal Tasks60.4%Task Horizon2.7h
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper13%
Agentic
Terminal Tasks—Task Horizon—
Specs
400K
Context
128K
Max output
Dec 2025
Released
1M
Context
131K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input38%$1.25/M tokens
Output$10.00/M tokens
Cache read50%$0.13/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$2.00/M tokens
Output40%$6.00/M tokens
Cache read$0.25/M tokens
Cache write$2.50/M tokens
Chat with GPT 5.1 Codex MaxGo to model
Chat with Qwen3.8 Max (0902)Go to model
Frequently Asked Questions: GPT 5.1 Codex Max vs Qwen3.8 Max (0902)▼

Which is better, GPT 5.1 Codex Max or Qwen3.8 Max (0902)?

▼

Both GPT 5.1 Codex Max and Qwen3.8 Max (0902) are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, GPT 5.1 Codex Max or Qwen3.8 Max (0902)?

▼

Qwen3.8 Max (0902) has a lower blended cost. GPT 5.1 Codex Max: $1.25 input / $10.00 output. Qwen3.8 Max (0902): $2.00 input / $6.00 output.

Which has a larger context window, GPT 5.1 Codex Max or Qwen3.8 Max (0902)?

▼

Qwen3.8 Max (0902) has a larger context window: GPT 5.1 Codex Max supports 400K tokens vs Qwen3.8 Max (0902) at 1M tokens.

Do both GPT 5.1 Codex Max and Qwen3.8 Max (0902) support vision?

▼

Yes, both GPT 5.1 Codex Max and Qwen3.8 Max (0902) support vision/image input.

What are the key differences between GPT 5.1 Codex Max and Qwen3.8 Max (0902)?

▼

GPT 5.1 Codex Max and Qwen3.8 Max (0902) have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GPT 5.1 Codex Max and Qwen3.8 Max (0902) for free on idapt.app to see which performs better for your specific needs.

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