Coding work
Code generation, repair, and software-engineering tasks
GPT-5.6 Luna
GPT-5.6 Luna leads on the public coding lane, 64.5 to 45.7, with Supported evidence for both models and non-overlapping 90% intervals.
Updated September 24, 2026. Rank says GPT-5.6 Luna is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.
Both of these models will change. Get the price, version and retirement notices for the pair, each with its source. Follow model changes
GPT-5.6 Luna has the higher public score estimate, 65.6 versus 52.03, but the 90% score intervals overlap. Treat that as a lead, not a settled winner. 5 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.
Code generation, repair, and software-engineering tasks
GPT-5.6 Luna
GPT-5.6 Luna leads on the public coding lane, 64.5 to 45.7, with Supported evidence for both models and non-overlapping 90% intervals.
Tool use, computer use, and multi-step task completion
GPT-5.6 Luna
GPT-5.6 Luna leads on the public agentic lane, 55.3 to 37.5, with Supported evidence for both models, although the 90% intervals overlap.
Prompts that approach the documented context limit
GPT-5.6 Luna
GPT-5.6 Luna has the larger documented context window.
1K fresh input + 500 output tokens
Not enough matched evidence
A complete comparable API-rate estimate is not available for both models.
200K cached + 20K fresh input + 10K output tokens
Not enough matched evidence
A complete comparable API-rate estimate is not available for both models.
50K fresh input + 3K output tokens
Not enough matched evidence
A complete comparable API-rate estimate is not available for both models.
Choose a job from the LLM Selector's task catalog to see the category row it rests on, under the same basis rules as the table below. A directional row stays directional; choosing a job never creates a winner.
The same task catalog as the LLM Selector. Each job names the evidence surface it rests on; nothing here adds a new score.
Like-for-like · BenchAlign v5.7
GPT-5.6 Luna leads the like-for-like coding row.
Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.
Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.
SWE-bench ProCoding
Normalized gap 5.5MMLU-Pro (Vals)Knowledge
Normalized gap 1.4Each row shows the public-lane category score for both models: the BenchAlign v5.7 lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.
| Category | GPT-5.6 Luna | MiMo-V2.5-Pro | Basis | Reading |
|---|---|---|---|---|
| Agentic | 55.3Supported · #28/105 | 37.5Supported · #48/105 | Like-for-likeBenchAlign v5.7 lane · 9 vs 5 public rows | GPT-5.6 Luna leads · intervals overlap |
| Coding | 64.5Supported · #9/135 | 45.7Supported · #46/135 | Like-for-likeBenchAlign v5.7 lane · 7 vs 4 public rows | GPT-5.6 Luna leads |
| Knowledge | 64.6Supported · #22/158 | 49.8Supported · #57/158 | Like-for-likeBenchAlign v5.7 lane · 6 vs 4 public rows | GPT-5.6 Luna leads · intervals overlap |
| Reasoning | 54.7#18/19 | 76.8Unranked · 2 rankable rows | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Multimodal | 67.1#22/50 | Not ranked | Not comparableProvisional lane · 1 vs 0 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Instruction following | Not ranked | 92.4#6/124 | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Math | 94.2Unranked · 3 rankable rows | Not ranked | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign v5.7) differ from the provisional-lane categories. Unranked scores sit on the provisional lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.
Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.
1K fresh input + 500 output tokens
MiMo-V2.5-Pro has no comparable published API token rate.
50K fresh input + 3K output tokens
MiMo-V2.5-Pro has no comparable published API token rate.
200K cached + 20K fresh input + 10K output tokens
MiMo-V2.5-Pro has no comparable published API token rate.
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
Maximum documented context; output-token limits may be lower.
GPT-5.6 Luna
1.05M
OpenAI model catalogMiMo-V2.5-Pro
1M
GPT-5.6 Luna
gpt-5.6-luna
OpenAI model catalogMiMo-V2.5-Pro
Not sourced
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
GPT-5.6 Luna
$0.02 per 1M cached input tokens
OpenAI pricingMiMo-V2.5-Pro
No comparable hosted API rate
GPT-5.6 Luna
text, image
OpenAI model catalogMiMo-V2.5-Pro
Not sourced
GPT-5.6 Luna
MiMo-V2.5-Pro
Not sourced
GPT-5.6 Luna
Generally Available · OpenAI Responses API
OpenAI model catalogMiMo-V2.5-Pro
Not sourced
GPT-5.6 Luna
Reasoning
MiMo-V2.5-Pro
Reasoning
GPT-5.6 Luna
Proprietary
MiMo-V2.5-Pro
Proprietary
GPT-5.6 Luna
Proprietary
MiMo-V2.5-Pro
Proprietary
GPT-5.6 Luna
2026-07-09
MiMo-V2.5-Pro
2026-04-22
GPT-5.6 Luna has the higher public score estimate, 65.6 versus 52.03, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.
GPT-5.6 Luna leads the public coding lane, 64.5 to 45.7, with Supported evidence for both models and non-overlapping 90% intervals.
GPT-5.6 Luna leads the public agentic tasks lane, 55.3 to 37.5, with Supported evidence for both models, although the 90% intervals overlap.
Both models do not have comparable published API token rates, so this page does not name a universal price winner.
GPT-5.6 Luna has the larger documented context window: 1.05M, compared with 1M.
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Terminal-Bench 3.0
Not directly comparable
Terminal-Bench 2.1
Not directly comparable
BrowseComp
Not directly comparable
OSWorld 2.0
Not directly comparable
CyberGym
Not directly comparable
ExploitGym
Not directly comparable
Toolathlon
Not directly comparable
Terminal-Bench 2.1 (Vals)
GPT-5.6 Luna leads this result
ApprenticeBench
Not directly comparable
Claw-Eval
Not directly comparable
τ³-bench results
Not directly comparable
Terminal-Bench 2.0
Not directly comparable
Gert Labs
Not directly comparable
SWE-bench Pro
GPT-5.6 Luna leads this result
Terminal-Bench 2.1
Not directly comparable
DeepSWE
Not directly comparable
FrontierCode 1.1 Extended
Not directly comparable
cursorBench32
Not directly comparable
VulcanBench v3
Not directly comparable
SWE-bench (Vals)
GPT-5.6 Luna leads this result
Terminal-Bench 2.0
Not directly comparable
LiveCodeBench (Vals)
Not directly comparable
GPQA
Not directly comparable
GPQA-D
Not directly comparable
HealthBench Professional
Not directly comparable
HealthBench Hard
Not directly comparable
GPQA Diamond (Vals)
GPT-5.6 Luna leads this result
MMLU-Pro (Vals)
GPT-5.6 Luna leads this result
HLE
Not directly comparable
HLE w/o tools
Not directly comparable
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Last updated September 24, 2026