Agentic
Directional only- Claude Opus 4.5
- 44.5
- Estimated · #101/151
- Laguna S 2.1
- 48.2
- Estimated · #77/151
- Basis
- BenchAlign lane · 15 vs 2 public rows
- Reading
- Directional only
Claude Opus 4.5 vs Laguna S 2.1
Updated September 4, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
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.
Share or export
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.
Long documents
Prompts that approach the documented context limit
Laguna S 2.1
Laguna S 2.1 has the larger documented context window.
Confidence: documented
Chat turn cost
1K fresh input + 500 output tokens
Laguna S 2.1
Laguna S 2.1 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Show secondary and unsupported calls
Repository review cost
50K fresh input + 3K output tokens
Laguna S 2.1
Laguna S 2.1 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Coding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
Laguna S 2.1 is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
Claude Opus 4.5 and Laguna S 2.1 are scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.
Confidence: limited
Cache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
Not enough matched evidence
The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. Claude Opus 4.5 does not fit this workload in one request. Claude Opus 4.5 has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
42 Claude Opus 4.5 only
3 Shared
3 Laguna S 2.1 only
- Shared results
- 3
- Claude Opus 4.5 only
- 42
- Laguna S 2.1 only
- 3
- Like-for-like categories
- 0 / 8
2 categories rest on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.
Category results, on a stated basis
Each row shows the public-lane category score for both models: the BenchAlign 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.
Coding
Directional only- Claude Opus 4.5
- 55.1
- Supported · #42/183
- Laguna S 2.1
- 47.8
- Estimated · #87/183
- Basis
- BenchAlign lane · 5 vs 4 public rows
- Reading
- Directional only
Reasoning
Not comparable- Claude Opus 4.5
- 72.1
- Unranked · 4 rankable rows
- Laguna S 2.1
- Not ranked
- Basis
- Provisional lane · 1 vs 0 weighted rows
- Reading
- Not comparable
Knowledge
Not comparable- Claude Opus 4.5
- 55.4
- Estimated · #60/181
- Laguna S 2.1
- Not ranked
- Basis
- BenchAlign lane · 6 vs 0 public rows
- Reading
- Not comparable
Math
Not comparable- Claude Opus 4.5
- 58.3
- #6/7
- Laguna S 2.1
- Not ranked
- Basis
- Provisional lane · 4 vs 0 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- Claude Opus 4.5
- 82.9
- #2/12
- Laguna S 2.1
- Not ranked
- Basis
- Provisional lane · 1 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Claude Opus 4.5
- 23.4
- #46/48
- Laguna S 2.1
- Not ranked
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- Claude Opus 4.5
- 39.5
- #103/120
- Laguna S 2.1
- Not ranked
- Basis
- Provisional lane · 1 vs 0 weighted rows
- Reading
- Not comparable
| Category | Claude Opus 4.5 | Laguna S 2.1 | Basis | Reading |
|---|---|---|---|---|
| Agentic | 44.5Estimated · #101/151 | 48.2Estimated · #77/151 | Directional onlyBenchAlign lane · 15 vs 2 public rows | Directional only |
| Coding | 55.1Supported · #42/183 | 47.8Estimated · #87/183 | Directional onlyBenchAlign lane · 5 vs 4 public rows | Directional only |
| Reasoning | 72.1Unranked · 4 rankable rows | Not ranked | Not comparableProvisional lane · 1 vs 0 weighted rows | Not comparable |
| Knowledge | 55.4Estimated · #60/181 | Not ranked | Not comparableBenchAlign lane · 6 vs 0 public rows | Not comparable |
| Math | 58.3#6/7 | Not ranked | Not comparableProvisional lane · 4 vs 0 weighted rows | Not comparable |
| Multilingual | 82.9#2/12 | Not ranked | Not comparableProvisional lane · 1 vs 0 weighted rows | Not comparable |
| Multimodal | 23.4#46/48 | Not ranked | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Instruction following | 39.5#103/120 | Not ranked | Not comparableProvisional lane · 1 vs 0 weighted rows | Not comparable |
Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.
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.
Terminal-Bench 2.0
Agentic
Claude Opus 4.5: 59.3%Laguna S 2.1: 70.2%Normalized gap 10.9Claude Opus 4.5 source Laguna S 2.1 sourceSWE-bench Pro
Coding
Claude Opus 4.5: 57.1%Laguna S 2.1: 59.4%Normalized gap 2.3Claude Opus 4.5 source Laguna S 2.1 sourceSWE Multilingual
Coding
Claude Opus 4.5: 77.5%Laguna S 2.1: 78.5%Normalized gap 1.0Claude Opus 4.5 source Laguna S 2.1 source
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
- Claude Opus 4.5
- $0.0175
- Fits in one request
- Laguna S 2.1
- $0.0002
- Fits in one request
Laguna S 2.1 has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- Claude Opus 4.5
- $0.325
- Fits in one request
- Laguna S 2.1
- $0.0056
- Fits in one request
Laguna S 2.1 has the lower modeled cost
Costs use the listed standard API rates.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- Claude Opus 4.5
- $1.35
- Does not fit in one request
- Cached input priced at the published list-input rate
- Laguna S 2.1
- $0.006
- Fits in one request
Claude Opus 4.5 does not fit this workload in one request. Claude Opus 4.5 has no published cached-input rate, so cached tokens use its listed input rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationClaude Opus 4.5Laguna S 2.1
Context window
Maximum documented context; output-token limits may be lower.
Claude Opus 4.5
200K
Laguna S 2.1
1M
API model ID
Claude Opus 4.5
Not sourced
Laguna S 2.1
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Claude Opus 4.5
Not published
Laguna S 2.1
$0.01 per 1M cached input tokens
Documented inputs
Claude Opus 4.5
Not sourced
Laguna S 2.1
Not sourced
Documented outputs
Claude Opus 4.5
Not sourced
Laguna S 2.1
Not sourced
Provider availability
Claude Opus 4.5
Not sourced
Laguna S 2.1
Not sourced
Reasoning profile
Claude Opus 4.5
Non-Reasoning
Laguna S 2.1
Reasoning
Weight access
Claude Opus 4.5
Proprietary
Laguna S 2.1
Open Weight
License
Claude Opus 4.5
Proprietary
Laguna S 2.1
Open Weight
Release date
Claude Opus 4.5
2025-11-01
Laguna S 2.1
2026-07-21
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: $0.325 vs $0.0056. Cache-heavy agent loop: $1.35 vs $0.006.
- Context tradeoff
- Laguna S 2.1 has the larger documented window (1M).
Run the same representative tasks against both endpoints before changing production traffic.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence48 rows
Agentic
Terminal-Bench 2.0
Claude Opus 4.559.3%SourceLaguna S 2.170.2%SourceLaguna S 2.1 leads this result
OSWorld-Verified
Claude Opus 4.566.3%SourceLaguna S 2.1—Not directly comparable
OSWorld
Claude Opus 4.566.3%SourceLaguna S 2.1—Not directly comparable
Claw-Eval
Claude Opus 4.559.6%SourceLaguna S 2.1—Not directly comparable
QwenClawBench
Claude Opus 4.552.3%SourceLaguna S 2.1—Not directly comparable
τ³-bench results
Claude Opus 4.570.2%SourceLaguna S 2.1—Not directly comparable
VITA-Bench
Claude Opus 4.523.3%SourceLaguna S 2.1—Not directly comparable
DeepPlanning
Claude Opus 4.526.4%SourceLaguna S 2.1—Not directly comparable
Toolathlon
Claude Opus 4.543.5%SourceLaguna S 2.1—Not directly comparable
MCP Atlas
Claude Opus 4.542.3%SourceLaguna S 2.1—Not directly comparable
MCP-Tasks
Claude Opus 4.571.8%SourceLaguna S 2.1—Not directly comparable
WideResearch
Claude Opus 4.576.4%SourceLaguna S 2.1—Not directly comparable
CyberGym
Claude Opus 4.550.6%SourceLaguna S 2.1—Not directly comparable
Gert Labs
Claude Opus 4.564.23%SourceLaguna S 2.1—Not directly comparable
JobBench
Claude Opus 4.532.3%SourceLaguna S 2.1—Not directly comparable
Toolathlon-Verified
Claude Opus 4.5—Laguna S 2.149.7%SourceNot directly comparable
Coding
SWE-bench Verified
Claude Opus 4.580.9%SourceLaguna S 2.1—Not directly comparable
LiveCodeBench v6
Claude Opus 4.584.8%SourceLaguna S 2.1—Not directly comparable
SWE-bench Pro
Claude Opus 4.557.1%SourceLaguna S 2.159.4%SourceLaguna S 2.1 leads this result
SWE Multilingual
Claude Opus 4.577.5%SourceLaguna S 2.178.5%SourceLaguna S 2.1 leads this result
NL2Repo
Claude Opus 4.543.2%SourceLaguna S 2.1—Not directly comparable
Terminal-Bench 2.0
Claude Opus 4.5—Laguna S 2.170.2%SourceNot directly comparable
deepSwe
Claude Opus 4.5—Laguna S 2.140.4%SourceNot directly comparable
Reasoning
Knowledge
GPQA
Claude Opus 4.587%SourceLaguna S 2.1—Not directly comparable
SuperGPQA
Claude Opus 4.570.6%SourceLaguna S 2.1—Not directly comparable
MMLU-Pro
Claude Opus 4.589.5%SourceLaguna S 2.1—Not directly comparable
MMLU-Redux
Claude Opus 4.596.6%SourceLaguna S 2.1—Not directly comparable
C-Eval
Claude Opus 4.592.2%SourceLaguna S 2.1—Not directly comparable
HLE
Claude Opus 4.530.8%SourceLaguna S 2.1—Not directly comparable
Math
AIME26
Claude Opus 4.595.1%SourceLaguna S 2.1—Not directly comparable
HMMT Feb 2025
Claude Opus 4.592.9%SourceLaguna S 2.1—Not directly comparable
HMMT Nov 2025
Claude Opus 4.593.3%SourceLaguna S 2.1—Not directly comparable
HMMT Feb 2026
Claude Opus 4.585.3%SourceLaguna S 2.1—Not directly comparable
MMAnswerBench
Claude Opus 4.584.0%SourceLaguna S 2.1—Not directly comparable
FrontierMath v2 (Tiers 1-3)
Claude Opus 4.520.690%SourceLaguna S 2.1—Not directly comparable
FrontierMath v2 (Tier 4)
Claude Opus 4.54.167%SourceLaguna S 2.1—Not directly comparable
Multilingual
Multimodal
MMMU-Pro
Claude Opus 4.570.6%SourceLaguna S 2.1—Not directly comparable
MathVision
Claude Opus 4.574.3%SourceLaguna S 2.1—Not directly comparable
CharXiv
Claude Opus 4.568.5%SourceLaguna S 2.1—Not directly comparable
VideoMMMU
Claude Opus 4.584.4%SourceLaguna S 2.1—Not directly comparable
ScreenSpot Pro
Claude Opus 4.545.7%SourceLaguna S 2.1—Not directly comparable
V*
Claude Opus 4.567.0%SourceLaguna S 2.1—Not directly comparable
Instruction following
Frequently asked questions
Which is better, Claude Opus 4.5 or Laguna S 2.1?
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, Claude Opus 4.5 or Laguna S 2.1?
Claude Opus 4.5 scores higher for coding on the public lane, 55.1 to 47.8. Laguna S 2.1 is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.
Which is better for agentic tasks, Claude Opus 4.5 or Laguna S 2.1?
Laguna S 2.1 scores higher for agentic tasks on the public lane, 48.2 to 44.5. Claude Opus 4.5 and Laguna S 2.1 are scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.
Which costs less, Claude Opus 4.5 or Laguna S 2.1?
For the stated presets, chat costs $0.0175 on Claude Opus 4.5 and $0.0002 on Laguna S 2.1; repository review costs $0.325 and $0.0056; the cache-heavy agent loop costs $1.35 and $0.006. Claude Opus 4.5 does not fit this workload in one request. Claude Opus 4.5 has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, Claude Opus 4.5 or Laguna S 2.1?
Laguna S 2.1 has the larger documented context window: 1M, compared with 200K.
Related comparisons
Last updated September 4, 2026
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