Mirr 1.0 Pro

Natural in Korean. Relentless with code.

Mirr's coding model. It can answer a question, but it can also keep going: reading your repository and carrying the work through inside Mirr.

Mirr 1.0 Pro
Model IDmirr-1.0-pro
DefaultThe default with no configuration. setup prepares it.
Best forRepository investigation · debugging · multi-file changes · planning · review · long-running work
LanguagesKeeps sessions that mix Korean requests with English symbols.
Operated byPost-trained and operated by Patty.
EvaluationDeepSWE +7.0pp over the pre-post-training checkpoint
AccessRuns inside Mirr, no separate account.

Compared with other models under the same conditions.

Every model solved the same 200 Korean tasks four times, in the same Mirr workspace with the same tools, budget and grading.

pass@1 per model and suite

Overall (200)Java bug fixes (75)JavaScript bug fixes (75)Python retention (50)
Claude Opus 595.497.398.088.5
Kimi K394.895.799.087.0
Mirr 1.0 Pro92.492.397.085.5
GLM-5.392.493.396.784.5
GPT-5.6 Sol88.587.385.794.5
MiniMax-M386.284.095.376.0
DeepSeek v4.1 Flash73.275.382.057.0

pass@1 by problem area

tasksMirr 1.0 ProClaude Opus 5Kimi K3GLM-5.3GPT-5.6 SolMiniMax-M3DeepSeek v4.1 Flash
Arrays, lists, grids (36)97999794999080
Strings and text (35)92989997868984
Numbers and counting (43)96999797858876
Bits, encodings, ciphers (12)969894961009277
Real-world formulas (49)85888986817964
Units, geometry, time (25)93949586928661

Score vs. work done

758085909510002468101214Opus 5 — pass@1 95.4, Tool calls, median per solve (fewer is cheaper): 10Opus 5Kimi K3 — pass@1 94.8, Tool calls, median per solve (fewer is cheaper): 7Kimi K3Mirr — pass@1 92.4, Tool calls, median per solve (fewer is cheaper): 33MirrGLM-5.3 — pass@1 92.4, Tool calls, median per solve (fewer is cheaper): 6GLM-5.3Sol — pass@1 88.5, Tool calls, median per solve (fewer is cheaper): 10SolMiniMax — pass@1 86.2, Tool calls, median per solve (fewer is cheaper): 8MiniMaxDeepSeek — pass@1 73.2, Tool calls, median per solve (fewer is cheaper): 13DeepSeek
Tool calls, median per solve (fewer is cheaper)
758085909510005001,0001,5002,000Opus 5 — pass@1 95.4, Output tokens, median per attempt (fewer is cheaper): 1,863Opus 5Kimi K3 — pass@1 94.8, Output tokens, median per attempt (fewer is cheaper): 1,399Kimi K3Mirr — pass@1 92.4, Output tokens, median per attempt (fewer is cheaper): 337337MirrGLM-5.3 — pass@1 92.4, Output tokens, median per attempt (fewer is cheaper): 530GLM-5.3Sol — pass@1 88.5, Output tokens, median per attempt (fewer is cheaper): 828SolMiniMax — pass@1 86.2, Output tokens, median per attempt (fewer is cheaper): 1,229MiniMaxDeepSeek — pass@1 73.2, Output tokens, median per attempt (fewer is cheaper): 1,334DeepSeek
Output tokens, median per attempt (fewer is cheaper)

Leaderboards test in English.Korean developers work in Korean.

Mirr 1.0 Pro was trained on Korean. DeepSWE: +7.0pp over the pre-post-training checkpoint.

SWE-bench, Terminal-Bench, and DeepSWE are useful views of coding agents. Their tasks and interactions, however, are mostly English. Patty re-runs the same tasks with Korean requests and publishes each score together with its conditions.

EvaluationWhat it measuresDisclosureStatus
DeepSWEReal repository issue resolutionPre-post-training checkpoint vs Mirr 1.0 Pro, matched conditionsInternal matched eval · +7.0pp
SWE-benchGitHub issue patch resolutionExact variant, subset, and harness disclosedKorean comparison in review
Terminal-BenchMulti-step work in a terminalVersion, environment, limits, and tools disclosedKorean comparison in review
Patty Korean SessionsLong mixed-language coding sessionsFollow-ups, context retention, and verification evaluatedProtocol in review

A benchmark episode is not a repository you work in for days. Translation equivalence, runtime environment, and grader variance can all move a score. Patty publishes the conditions next to the number, or does not publish the number.

FAQ

Is Mirr 1.0 Pro built by Patty?

Yes. Patty post-trains and operates Mirr 1.0 Pro for software work and Korean collaboration.

Must I use Korean?

No. Code is mixed-language by nature. Move between Korean and English as needed.

Does it only write code?

No. Ask it to investigate, explain, plan, or review without producing a patch.

Mirr 1.0 Pro or Mirr, which is which?

Mirr 1.0 Pro is the model making judgments. Mirr is the workspace that connects it to files and tools.

Why can real use differ from a public score?

Task language, harness, tools, time limits, and multi-turn context all change the result.

Try Mirr right now.