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MiniMax M3 vs GPT-5.5
GPT-5.5 scores higher than MiniMax M3 on all 3 public leaderboards that rate both. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, MiniMax M3 is at 5.1 and GPT-5.5 at 66.7 (out of 100). On each maker's API, MiniMax M3 costs $0.30 / $1.20 per 1M tokens (input / output) and GPT-5.5 $5 / $30.
Scores as published by each board; table composed November 10, 2026.
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Leaderboard by leaderboard
| Board | MiniMax M3 | GPT-5.5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,484.2 | 1,511.9 | GPT-5.5 |
| SimpleBench AVG@5 % (private set) | 45.8 | 76.9 | GPT-5.5 |
| Epoch AI Epoch Capabilities Index (ECI) · many benchmarks on one scale | 147.8 | 162.8 | GPT-5.5 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
For coding
On the ArtificialWatch coding index, MiniMax M3 is at 16.8 (#44 of 47) and GPT-5.5 at 38.4 (#29). GPT-5.5 scores higher on both coding boards that rate them.
| Coding board | MiniMax M3 | GPT-5.5 |
|---|---|---|
| LMArena · Coding | 1,468.6 | 1,493.9 |
| Vals Vibe Code Bench | 47.6 | 69.8 |
MiniMax M3 at a glance
- Developer
- MiniMax
- Status
- Live since May 31, 2026
- API price
- $0.30 input / $1.20 output per 1M tokens · MiniMax, MiniMax-M3
- Context window
- 1M tokens
Live — $0.30/$1.20 per 1M.
GPT-5.5 at a glance
- Developer
- OpenAI
- Status
- Live since April 24, 2026
- API price
- $5 input / $30 output per 1M tokens · OpenAI, gpt-5.5
- Context window
- 1.05M tokens
Live.
MiniMax M3 vs GPT-5.5: quick answers
Which is better, MiniMax M3 or GPT-5.5?
It depends on what you measure. GPT-5.5 scores higher than MiniMax M3 on all 3 public leaderboards that rate both. GPT-5.5's widest lead is on Epoch AI. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, MiniMax M3 is at 5.1 and GPT-5.5 at 66.7 (out of 100).
Which is newer, MiniMax M3 or GPT-5.5?
MiniMax M3. It went live on May 31, 2026, 37 days after GPT-5.5 (April 24, 2026).
Which is cheaper, MiniMax M3 or GPT-5.5?
MiniMax M3 is cheaper on both input and output. On each vendor's own API, MiniMax M3 is $0.30 input / $1.20 output per million tokens and GPT-5.5 is $5 input / $30 output per million tokens. MiniMax M3's rate rises for prompts over 512K tokens; GPT-5.5's rate rises for prompts over 272K tokens. Prices as published in the models.dev catalog, as of 2026-11-10.
Which has the bigger context window, MiniMax M3 or GPT-5.5?
GPT-5.5, at 1.05M tokens against MiniMax M3's 1M, as each vendor lists it.
How do MiniMax M3 and GPT-5.5 compare for coding?
On the ArtificialWatch coding index, MiniMax M3 is at 16.8 (#44 of 47) and GPT-5.5 at 38.4 (#29). GPT-5.5 scores higher on both coding boards that rate them.
Who makes MiniMax M3 and GPT-5.5?
MiniMax M3 is from MiniMax; GPT-5.5 is from OpenAI.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed November 10, 2026). Boards measure different things, so raw scores are only comparable within a row.
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Also: the bench index · API pricing · what a workload costs on each · the wire