Long documents
Prompts that approach the documented context limit
GPT-5.6 Terra
GPT-5.6 Terra has the larger documented context window.
Confidence: documented
GPT-5.6 Terra vs Interfaze Beta
Updated September 24, 2026. We do not rank this pair: at least one has no public score. 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
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Decision reading
At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner. 3 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
- Shared results
- 3
- GPT-5.6 Terra only
- 29
- Interfaze Beta only
- 6
- Like-for-like categories
- 0 / 8
Supported: GPT-5.6 TerraHow the comparison works
Which one for your work
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.
Chat turn cost
1K fresh input + 500 output tokens
Interfaze Beta
Interfaze Beta has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-ratesCache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
GPT-5.6 Terra
GPT-5.6 Terra has the lower estimated token cost for this stated workload. Interfaze Beta has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
Show secondary and unsupported calls
Repository review cost
50K fresh input + 3K output tokens
Interfaze Beta
Interfaze Beta has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-ratesCoding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
Interfaze Beta is not ranked on the public lane for coding, so no winner is named for coding.
Confidence: limitedAgentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
Interfaze Beta is not ranked on the public lane for agentic, so no winner is named for agentic.
Confidence: limited
Which one for a specific job
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.
64.7GPT-5.6 Terra—Interfaze Beta
Not comparable · BenchAlign v5.7
The coding row is not comparable on the public lane: at least one model is not measured or not ranked there.
Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.
Same basis rules as the category table below
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
29 GPT-5.6 Terra only
3 Shared
6 Interfaze Beta only
Shape of the matched evidence
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.
MMMU-ProMultimodal
Normalized gap 9.6GPT-5.6 Terra:80.7%Interfaze Beta:71.1%GPQAKnowledge
Normalized gap 3.0GPT-5.6 Terra:92.9%Interfaze Beta:89.9%
Bars run 0–100 on each benchmark’s normalized display scale
Category results, on a stated basis
Each 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.
Agentic
Not comparable- GPT-5.6 Terra
- 59.5
- Supported · #18/105
- Interfaze Beta
- Not ranked
- Basis
- BenchAlign v5.7 lane · 9 vs 0 public rows
- Reading
- Not comparable
Coding
Not comparable- GPT-5.6 Terra
- 64.7
- Supported · #8/135
- Interfaze Beta
- Not ranked
- Basis
- BenchAlign v5.7 lane · 8 vs 1 public rows
- Reading
- Not comparable
Reasoning
Not comparable- GPT-5.6 Terra
- 65.4
- #12/19
- Interfaze Beta
- Not ranked
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- GPT-5.6 Terra
- 77.2
- #16/50
- Interfaze Beta
- 27.6
- Unranked · 5 rankable rows
- Basis
- Provisional lane · 1 vs 1 weighted rows
- Reading
- Not comparable
Knowledge
Not comparable- GPT-5.6 Terra
- 71.1
- Supported · #9/158
- Interfaze Beta
- Not ranked
- Basis
- BenchAlign v5.7 lane · 8 vs 3 public rows
- Reading
- Not comparable
Multilingual
Not comparable- GPT-5.6 Terra
- Not ranked
- Interfaze Beta
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- GPT-5.6 Terra
- 85.7
- #35/124
- Interfaze Beta
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- GPT-5.6 Terra
- 96.8
- Unranked · 3 rankable rows
- Interfaze Beta
- Not ranked
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
| Category | GPT-5.6 Terra | Interfaze Beta | Basis | Reading |
|---|---|---|---|---|
| Agentic | 59.5Supported · #18/105 | Not ranked | Not comparableBenchAlign v5.7 lane · 9 vs 0 public rows | Not comparable |
| Coding | 64.7Supported · #8/135 | Not ranked | Not comparableBenchAlign v5.7 lane · 8 vs 1 public rows | Not comparable |
| Reasoning | 65.4#12/19 | Not ranked | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Multimodal | 77.2#16/50 | 27.6Unranked · 5 rankable rows | Not comparableProvisional lane · 1 vs 1 weighted rows | Not comparable |
| Knowledge | 71.1Supported · #9/158 | Not ranked | Not comparableBenchAlign v5.7 lane · 8 vs 3 public rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Instruction following | 85.7#35/124 | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Math | 96.8Unranked · 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.
Supported evidence per lane · bars run 0–100Methodology
What each workload costs
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.
Chat turn
1K fresh input + 500 output tokens
- GPT-5.6 Terra
- $0.008
- Fits in one request
- Interfaze Beta
- $0.00325
- Fits in one request
Interfaze Beta has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- GPT-5.6 Terra
- $0.136
- Fits in one request
- Interfaze Beta
- $0.0855
- Fits in one request
Interfaze Beta has the lower modeled cost
Costs use the listed standard API rates.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- GPT-5.6 Terra
- $0.2
- Fits in one request
- Interfaze Beta
- $0.365
- Fits in one request
- Cached input priced at the published list-input rate
GPT-5.6 Terra has the lower modeled cost
Interfaze Beta has no published cached-input rate, so cached tokens use its listed input rate.
Cached input falls back to the list input rate only where a cached rate is unpublished
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationGPT-5.6 TerraInterfaze Beta
Context window
Maximum documented context; output-token limits may be lower.
GPT-5.6 Terra
1.05M
OpenAI model catalogInterfaze Beta
1M
API model ID
GPT-5.6 Terra
gpt-5.6-terra
OpenAI model catalogInterfaze Beta
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
GPT-5.6 Terra
$0.2 per 1M cached input tokens
OpenAI pricingInterfaze Beta
Not published
Documented inputs
GPT-5.6 Terra
text, image
OpenAI model catalogInterfaze Beta
Not sourced
Documented outputs
GPT-5.6 Terra
Interfaze Beta
Not sourced
Provider availability
GPT-5.6 Terra
Generally Available · OpenAI Responses API
OpenAI model catalogInterfaze Beta
Not sourced
Reasoning profile
GPT-5.6 Terra
Reasoning
Interfaze Beta
Reasoning
Weight access
GPT-5.6 Terra
Proprietary
Interfaze Beta
Proprietary
License
GPT-5.6 Terra
Proprietary
Interfaze Beta
Proprietary
Release date
GPT-5.6 Terra
2026-07-09
Interfaze Beta
2026-05-11
If you already use one of these models
- Deployment change
- The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
- Quality signal
- At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner.
- Workload cost
- Repository review: $0.136 vs $0.0855. Cache-heavy agent loop: $0.2 vs $0.365.
- Context tradeoff
- GPT-5.6 Terra has the larger documented window (1.05M).
Run the same representative tasks against both endpoints before changing production traffic.
Questions
Which is better, GPT-5.6 Terra or Interfaze Beta?
At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner. The page therefore keeps the decision tied to the specific documented workload.
Which is better for coding, GPT-5.6 Terra or Interfaze Beta?
Interfaze Beta is not ranked on the public lane for coding, so no winner is named for coding.
Which is better for agentic tasks, GPT-5.6 Terra or Interfaze Beta?
Interfaze Beta is not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.
Which costs less, GPT-5.6 Terra or Interfaze Beta?
For the stated presets, chat costs $0.008 on GPT-5.6 Terra and $0.00325 on Interfaze Beta; repository review costs $0.136 and $0.0855; the cache-heavy agent loop costs $0.2 and $0.365. Interfaze Beta has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, GPT-5.6 Terra or Interfaze Beta?
GPT-5.6 Terra has the larger documented context window: 1.05M, compared with 1M.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence38 rows
Agentic
Terminal-Bench 3.0
GPT-5.6 Terra20.8%SourceInterfaze Beta—Not directly comparable
Terminal-Bench 2.1
GPT-5.6 Terra87.4%SourceInterfaze Beta—Not directly comparable
BrowseComp
GPT-5.6 Terra87.5%SourceInterfaze Beta—Not directly comparable
OSWorld 2.0
GPT-5.6 Terra50.2%SourceInterfaze Beta—Not directly comparable
CyberGym
GPT-5.6 Terra81.8%SourceInterfaze Beta—Not directly comparable
ExploitGym
GPT-5.6 Terra23.2%SourceInterfaze Beta—Not directly comparable
Toolathlon
GPT-5.6 Terra53.1%SourceInterfaze Beta—Not directly comparable
Terminal-Bench 2.1 (Vals)
GPT-5.6 Terra77.5%SourceInterfaze Beta—Not directly comparable
ApprenticeBench
GPT-5.6 Terra16%SourceInterfaze Beta—Not directly comparable
Coding
SWE-bench Pro
GPT-5.6 Terra63.4%SourceInterfaze Beta—Not directly comparable
Terminal-Bench 2.1
GPT-5.6 Terra87.4%SourceInterfaze Beta—Not directly comparable
DeepSWE
GPT-5.6 Terra69.6%SourceInterfaze Beta—Not directly comparable
FrontierCode 1.1 Extended
GPT-5.6 Terra55.8%SourceInterfaze Beta—Not directly comparable
cursorBench32
GPT-5.6 Terra64.9%SourceInterfaze Beta—Not directly comparable
VulcanBench v3
GPT-5.6 Terra87.0%SourceInterfaze Beta—Not directly comparable
LiveCodeBench (Vals)
GPT-5.6 Terra85.9%SourceInterfaze Beta—Not directly comparable
SWE-bench (Vals)
GPT-5.6 Terra95.4%SourceInterfaze Beta—Not directly comparable
Spider 2.0-Lite
GPT-5.6 Terra—Interfaze Beta52.9%SourceNot directly comparable
Reasoning
Multimodal
MMMU-Pro
GPT-5.6 Terra80.7%SourceInterfaze Beta71.1%SourceGPT-5.6 Terra leads this result
MMMU-Pro w/ Python
GPT-5.6 Terra82%SourceInterfaze Beta—Not directly comparable
OCRBench V2
GPT-5.6 Terra—Interfaze Beta70.7%SourceNot directly comparable
olmOCR
GPT-5.6 Terra—Interfaze Beta85.7%SourceNot directly comparable
RefCOCO (avg)
GPT-5.6 Terra—Interfaze Beta82.1%SourceNot directly comparable
Knowledge
GPQA
GPT-5.6 Terra92.9%SourceInterfaze Beta89.9%SourceGPT-5.6 Terra leads this result
GPQA-D
GPT-5.6 Terra92.9%SourceInterfaze Beta89.9%SourceGPT-5.6 Terra leads this result
HLE-Verified
GPT-5.6 Terra51.1%SourceInterfaze Beta—Not directly comparable
LABBench2
GPT-5.6 Terra81.2%SourceInterfaze Beta—Not directly comparable
HealthBench Professional
GPT-5.6 Terra57.7%SourceInterfaze Beta—Not directly comparable
HealthBench Hard
GPT-5.6 Terra32.7%SourceInterfaze Beta—Not directly comparable
GPQA Diamond (Vals)
GPT-5.6 Terra90.9%SourceInterfaze Beta—Not directly comparable
MMLU-Pro (Vals)
GPT-5.6 Terra86.7%SourceInterfaze Beta—Not directly comparable
MMMLU
GPT-5.6 Terra—Interfaze Beta90.9%SourceNot directly comparable
Instruction following
SOB Value Acc
GPT-5.6 Terra—Interfaze Beta79.5%SourceNot directly comparable
Math
38 public results · 3 shared
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Last updated September 24, 2026