M

Quasar 438B

Aug 2026
MQuasar 438B
Compare in
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$0.15per task?
$0.60 / $1.80per 1M in / out
164 tok/sfirst token in 1.3 s?
1Mcontext

Ranking?

Strong at

A
Knowledge#79 of 320
B
Coding#56 of 134Agents & work tasks#53 of 177Reasoning#131 of 336Long context#84 of 314
C
Science#168 of 312

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperMiMo v2.6 ProthinkingOpen+43%-10%$0.13Pass back reasoning_content+3BetterGPT-6 Lunamedium+8%-88%$0.017Function calling only with none · Chat Completions+3OpenDeepSeek V4.1 Flash 1017max+48%+77%$0.26Pass back reasoning_content · Chat Completions+4CheaperMiMo v2.6 FlashthinkingOpen+37%-58%$0.062Pass back reasoning_content+3CheaperClaude Haiku 5.5xhigh+29%-16%$0.12Remove sampling parameters+5

Benchmarks

all categories
Chat & Knowledge
Humanity's Last Exam18.7#131
AA Omniscience Index-2.6#79
CritPt (physics)9.4#63
AA Intelligence Index 4.3.226.7#71
AA Omniscience · Accuracy15.5#228
AA Omniscience · Hallucination Rate21.4#10
AA-LCR (long context) 1.176.3#84
GDP.pdf · AA all-pass5.4#83
MLCR-AA9.4#60
GPQA Diamond73.2#170
Coding
Terminal-Bench 4.01#56
SciCode48.1#60
Terminal-Bench 2.169.3#39
Agents & Tool Use
AutomationBench-AA23.9#57
GDPval-AA (work tasks) 2.11,181.9#53
τ³-Banking · AA28.7#37
AA-Briefcase 1.1 · Elo1,122.4#48

FAQ

How much does Quasar 438B cost?›

$0.60 per 1M input tokens and $1.80 per 1M output tokens. A typical benchmark task costs about $0.15 at max effort.

Is Quasar 438B free to use?›

There is no free API; the cheapest paid price is $0.60 per 1M input tokens.

How good is Quasar 438B, and what is it best at?›

#131 of 336 in Chat & Knowledge, #56 of 134 in Coding, #57 of 135 in Agents & Tool Use, #83 of 135 in Vision & Documents. Strongest at: Knowledge.

Is Quasar 438B better than Apodex 1.1?›

On GDPval-AA (work tasks) 2.1, Quasar 438B scores 1,181.9 vs 1,188.9 — lower. It is 68% cheaper per task.

How can I use Quasar 438B?›

Through the API of Multiverse Computing.

What is the context window of Quasar 438B?›

1M tokens.

When was Quasar 438B released? Is there a newer version?›

Released 2026-08-10. It is the current version in its line.

Is Quasar 438B open source?›

No, Quasar 438B is a closed model available through an API. The closest open-weights option here is DeepSeek V4.1 Flash 1017.

Can Quasar 438B read images?›

No, it accepts text only.

What is Quasar 438B?›

Quasar 438B is a closed language model from Multiverse Computing, released Aug 2026.

What are the best alternatives to Quasar 438B?›

MiMo v2.6 Pro (cheaper), GPT-6 Luna (better), DeepSeek V4.1 Flash 1017 (open weights).