GPT-5.3-Codex vs Qwen3.8 Omni Flash

Price, context window & benchmark comparison

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GPT-5.3-Codex

OpenAI
$1.75 / $14.00
Input / Output · per 1M tokens
VS
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Qwen3.8 Omni Flash

Qwen (Alibaba)
$0.15 / $0.47
Input / Output · per 1M tokens
Compare different models
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Verdict: Qwen3.8 Omni Flash is 20.9× cheaper than GPT-5.3-Codex on a typical 3:1 input/output mix. Qwen3.8 Omni Flash has the larger context window (1M vs 400K).
GPT-5.3-CodexQwen3.8 Omni Flash
Input price / 1M$1.75$0.15
Output price / 1M$14.00$0.47
Blended price (3:1)$4.81$0.23
Cached input / 1M$0.17$0.016
Context window400K1M
Max output128K131K
Intelligence index——
Coding index——
Providers—1
Best provider uptime (30m)—100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-02-242026-09-21
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-5.3-Codex or Qwen3.8 Omni Flash?

Qwen3.8 Omni Flash is 20.9× cheaper than GPT-5.3-Codex on a typical 3:1 input/output mix.

GPT-5.3-Codex vs Qwen3.8 Omni Flash: which has a bigger context window?

GPT-5.3-Codex: 400,000 tokens. Qwen3.8 Omni Flash: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-5.3-Codex ≈ $10,500, Qwen3.8 Omni Flash ≈ $535.00.

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