GPT-5.4vsMistral Large 2
GPT-5.4 is cheaper than Mistral Large 2 at $2.5/M vs $8/M input tokens.
| Spec | GPT-5.4 | Mistral Large 2 |
|---|---|---|
| Input price | $2.5/M tokens | $8/M tokens |
| Output price | $15/M tokens | $24/M tokens |
| Context window | 1.1M tokens | 128K tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Mar 2026 | Jul 2024 |
Our Verdict
GPT-5.4
Mistral Large 2Runner-up
Not enough votes to call it. On the specs, GPT-5.4 has the edge: bigger model tier, newer, bigger context window, major provider backing.
Slight edge
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-5.4
Input
$2.50
3.2× cheaper
Output
$15.00
1.6× cheaper
Mistral Large 2
Input
$8.00
Output
$24.00
GPT-5.4 is cheaper on both: 3.2× input, 1.6× output.
Where to run it
4 hosts, cheapest first
Mistral Large 21 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
65%
Mistral Large 2 uses 79.6x more emoji
GPT-5.4
Mistral Large 2
53%Vocabulary43%
28wSentence Length21w
0.80Hedging0.39
4.0Bold14.4
8.3Lists7.4
0.00Emoji0.80
1.87Headings1.41
0.02Transitions0.01
Based on 23 + 10 text responses
Research
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FAQ
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