Claude Sonnet 4.5 vs MAI-Code-1-Flash
Wins 1 of 3 areas
Coding
Wins 2 of 3 areas
Reasoning · Following instructions
MAI-Code-1-Flash is the stronger all-rounder.Claude Sonnet 4.5 is better at coding.
Scores updated · 8 tests both models report · How we compare
Where each one wins
Tests won in each of the three areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
Following instructions rests on a single test.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where MAI-Code-1-Flash pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+17.7points ahead
- Long, multi-file coding tasks in real codebasesSWE-bench Pro+7.6points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+1.2points ahead
Where Claude Sonnet 4.5 pulls ahead
- Fixes real GitHub issues in Python projectsSWE-bench Verified+5.6points ahead
- Fixes real GitHub issues in many programming languagesSWE-bench Multilingual+1.5points ahead
Every test, side by side
All 8 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Sonnet 4.5
- SWE-bench ProMAI-Code-1-Flash by 7.643.651.2+7.6
- SWE-bench VerifiedClaude Sonnet 4.5 by 5.677.271.6+5.6
- SWE-bench MultilingualClaude Sonnet 4.5 by 1.56765.5+1.5
ReasoningMAI-Code-1-Flash
- GPQA DiamondMAI-Code-1-Flash by 1.283.484.6+1.2
- Humanity's Last Examtie17.818tie
Following instructionsMAI-Code-1-Flash
- IFBenchMAI-Code-1-Flash by 17.757.375+17.7
Other results2 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- ArtifactsBenchClaude Sonnet 4.5 by 25.161.536.4+25.1
- Terminal-Bench 2.0MAI-Code-1-Flash by 4.85054.8+4.8
Questions people ask
Which is better, Claude Sonnet 4.5 or MAI-Code-1-Flash?
MAI-Code-1-Flash wins two of the three areas where both have results: reasoning and following instructions. Claude Sonnet 4.5 wins coding.
Which is better for coding?
Claude Sonnet 4.5. It wins 2 of the 3 coding tests both models report; MAI-Code-1-Flash wins 1.
How do you compare the two?
We use the 8 benchmark tests both models have published scores on. The verdict counts the 6 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 2 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.