text model comparison
Claude Opus 5.5 vs LongCat-2.5
Claude Opus 5.5 and LongCat-2.5 are both current text models, from Anthropic and Meituan. LongCat-2.5 is 93% cheaper per 1M input tokens than Claude Opus 5.5, $0.30 vs $4. Both accept about 1.05M tokens of context (1,048,576 and 1,000,000).
- Lower price per 1M input tokens
- LongCat-2.5$0.30 against $4
- Longer context window
- LongCat-2.51.05M tokens against 1M tokens
- Newer release
- LongCat-2.5Nov 2026 against Sep 2026
Data verified November 3, 2026 · Dataset 2026-11-05
Side by side
Claude Opus 5.5 and LongCat-2.5, line by line
Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.
| Fact | Claude Opus 5.5 | LongCat-2.5 |
|---|---|---|
| Price | ||
| Price per 1M input tokens | $4 | $0.30 (better) |
| Price per 1M output tokens | $20 | $1.20 (better) |
| Independent benchmarks | ||
| Arena Text | 1509 Elo (#3 of 52) | Not measured |
| Arena WebDev | 1810 Elo (#1 of 46) | Not measured |
| GPQA Diamond | 90.6% (#25 of 41) | Not measured |
| FrontierMath Tiers 1-3 (v2) | 91.2% (#3 of 41) | Not measured |
| SimpleQA Verified | 72.2% (#5 of 38) | Not measured |
| Specs | ||
| Provider | Anthropic | Meituan |
| Release date | September 22, 2026 | November 2, 2026 |
| Access | API only | API only |
| Context window | 1,000,000 tokens | 1,048,576 tokens |
| Max output | 128,000 tokens | 262,144 tokens |
| Input | text, image | text, image, video |
| Output | text | text |
No independent benchmark has scored both models yet. Each rank counts the current models scored on that benchmark.
Charts
Against every current text model
Where Claude Opus 5.5 and LongCat-2.5 land among the current models of their task, on every independent benchmark, on price and on context.
Where each stands
Only Claude Opus 5.5 has a current Arena Text score: #3 of 52. Each bar is the share of current models it beats.
Independent benchmarks
Arena Text
Claude Opus 5.5:#3of 52
1,509 Elo · ahead of 96%
LongCat-2.5: Not scored
Arena WebDev
Claude Opus 5.5:#1of 46
1,810 Elo · ahead of 100%
LongCat-2.5: Not scored
GPQA Diamond
Claude Opus 5.5:#25of 41
90.6% · ahead of 40%
LongCat-2.5: Not scored
FrontierMath Tiers 1-3 (v2)
Claude Opus 5.5:#3of 41
91.2% · ahead of 95%
LongCat-2.5: Not scored
SimpleQA Verified
Claude Opus 5.5:#5of 38
72.2% · ahead of 89%
LongCat-2.5: Not scored
Price and context
Price per 1M input tokens
Claude Opus 5.5:#45of 55
$4 · cheaper than 15%
LongCat-2.5:#11of 55
$0.30 · cheaper than 76%
Price per 1M output tokens
Claude Opus 5.5:#45of 55
$20 · cheaper than 15%
LongCat-2.5:#10of 55
$1.20 · cheaper than 78%
Context window
Claude Opus 5.5:#26of 64
1M tokens · longer than 22%
LongCat-2.5:#11of 64
1.05M tokens · longer than 67%
Quality against price
Claude Opus 5.5 scores 1,509 at $8 (blended price per 1M tokens). The line joins the current models no other beats on both price and Arena Text score; hover any point to name it.
Quality against price: the data
| Model | Provider | Blended price per 1M tokens | Arena Text (Elo) |
|---|---|---|---|
| Gemini 4 Carbon | $4 | 1,528 | |
| Gemini 4 Argon | $4 | 1,520 | |
| Claude Opus 5.5 | Anthropic | $8 | 1,509 |
| Muse Wonder | Meta | $8 | 1,507 |
| Claude Fable 5 | Anthropic | $20 | 1,504 |
| Claude Fable 5.1 | Anthropic | $20 | 1,504 |
| Gemini 3.8 Flash | $1.50 | 1,496 | |
| Muse Spark 1.3 | Meta | $2 | 1,495 |
| Claude Opus 5 | Anthropic | $10 | 1,492 |
| Kimi K3 | Moonshot Kimi | $6 | 1,488 |
| GPT-5.6 Sol | OpenAI | $8 | 1,485 |
| Gemini 3.6 Flash | $3 | 1,483 | |
| GPT-5.5 | OpenAI | $11 | 1,482 |
| Claude Opus 4.8 | Anthropic | $10 | 1,482 |
| Qwen3.8-Max | Alibaba Qwen | $3 | 1,482 |
| GPT-6.1 Sol | OpenAI | $4 | 1,481 |
| GLM-5.3 | Z.ai | $2.15 | 1,481 |
| MiMo-V2.6-Pro | Xiaomi MiMo | $0.54 | 1,480 |
| Claude Sonnet 5.5 | Anthropic | $4 | 1,477 |
| GLM-5.3-Flash | Z.ai | $0.24 | 1,477 |
| GPT-6 Astra | OpenAI | $20 | 1,476 |
| DeepSeek-V4.1-Flash | DeepSeek | $0.52 | 1,476 |
| GPT-5.4 | OpenAI | $5.63 | 1,475 |
| Gemini 3 Flash Preview | $1.13 | 1,473 | |
| Grok 4.20 | xAI | $1.56 | 1,472 |
| GPT-5.6 Terra | OpenAI | $4.50 | 1,467 |
| Grok 4.5 | xAI | $3 | 1,465 |
| DeepSeek-V4-Pro | DeepSeek | $1.98 | 1,465 |
| Claude Sonnet 5 | Anthropic | $4 | 1,462 |
| GPT-6 Sol | OpenAI | $4 | 1,458 |
| Gemini 3.5 Flash-Lite | $0.85 | 1,456 | |
| Grok 4.6 | xAI | $3 | 1,455 |
| GPT-5.6 Luna | OpenAI | $0.45 | 1,453 |
| MiMo-V2.6-Flash | Xiaomi MiMo | $0.18 | 1,448 |
| Step 5 Preview | StepFun | $1.43 | 1,448 |
| Grok 4.3 | xAI | $1.56 | 1,442 |
| GPT-6 Luna | OpenAI | $0.20 | 1,441 |
| Grok 4.7 | xAI | $3 | 1,441 |
| Mistral Large 4 | Mistral AI | $1.05 | 1,432 |
| Claude Haiku 5.5 | Anthropic | $0.20 | 1,425 |
| GPT-4.1 | OpenAI | $3.50 | 1,415 |
| Solar Pro 4 | Upstage | $0.52 | 1,388 |
| GPT-4.1 mini | OpenAI | $0.70 | 1,383 |
| GPT-4.1 nano | OpenAI | $0.18 | 1,322 |
Cost
What each costs
Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.
The same work, priced
For 10M input and 2M output tokens, Claude Opus 5.5 costs 15 times as much as LongCat-2.5, at each provider's listed rates.
10M input and 2M output tokens
Claude Opus 5.5 costs 15× as much
- Claude Opus 5.5
- $80
- LongCat-2.5
- $5.40
The same, with 9M of the input tokens cached
Claude Opus 5.5 costs 17× as much
- Claude Opus 5.5
- $45.80
- LongCat-2.5
- $2.75
| Workload or rate | Claude Opus 5.5 | LongCat-2.5 |
|---|---|---|
| Example workloads | ||
| 10M input and 2M output tokens | $80 | $5.40 (better) |
| The same, with 9M of the input tokens cached | $45.80 | $2.75 (better) |
| The same, through the batch API | $40 | Not listed |
| Other listed rates | ||
| 1M input tokens, cached | $0.20 | $0.006 (better) |
| 1M input tokens, 5-minute cache write | $5 | Not listed |
| 1M input tokens, 1-hour cache write | $8 | Not listed |
| 1M input tokens, batch | $2 | Not listed |
| 1M output tokens, batch | $10 | Not listed |
Your own bill will differ. These figures use list prices and example workloads. The AI Model Cost Audit reviews your real usage, shortlists models that score as well for each task for less, and estimates the savings.
Launch price $100, regular price $150
Verdict
When to choose each
Claude Opus 5.5
Where it leads
- Batch pricing, $2 input and $10 output per 1M tokens
Best for
- Long-running agentic coding and knowledge work as the general-purpose default
- Cache-heavy agent loops where the 0.05x read multiplier compounds
Watch out for
- The API effort default is medium here, not high as on Claude Fable 5.1 and Claude Sonnet 5.5, so a like-for-like comparison has to set effort explicitly
- The 4.7-generation tokenizer produces roughly 30% more tokens for the same text than Claude Sonnet 4.6 and earlier, so per-token rates do not compare directly across generations
LongCat-2.5
Where it leads
- Lower input and output prices, $0.30 and $1.20 vs $4 and $20 per 1M tokens
- Longer responses, up to 262,144 vs 128,000 output tokens
- Accepts video input
- Cheaper cached input, $0.006 vs $0.20 per 1M tokens
Best for
- Coding agents working through whole projects in Claude Code, Codex or similar harnesses
- Visual coding and design work that mixes screenshots or screen recordings with code
Watch out for
- The recorded rates are a limited-time discount: Meituan publishes no list price and no end date
- API only: no weights had been published when this record was made
- Released on 2 November 2026, so no independent benchmark score is recorded here yet
From benchmark to production
Building on Claude Opus 5.5 or LongCat-2.5?
Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.
AI Model Cost AuditLaunch price $100, regular price $150What the audit includes
FAQ
Claude Opus 5.5 vs LongCat-2.5 FAQ
Which is cheaper, Claude Opus 5.5 or LongCat-2.5?
LongCat-2.5 is 93% cheaper per 1M input tokens than Claude Opus 5.5, $0.30 vs $4. For 10M input and 2M output tokens, Claude Opus 5.5 costs $80 and LongCat-2.5 $5.40 at standard rates.
Which is cheaper with prompt caching, Claude Opus 5.5 or LongCat-2.5?
Claude Opus 5.5 charges $0.20 per 1M cached input tokens, 95% below its standard input rate, and LongCat-2.5 $0.006, 98% below. With 9M of 10M input tokens cached and 2M output tokens, Claude Opus 5.5 costs $45.80 and LongCat-2.5 $2.75.
Which has the larger context window, Claude Opus 5.5 or LongCat-2.5?
Both accept about 1.05M tokens of context (1,048,576 and 1,000,000). LongCat-2.5 returns up to 262,144 tokens per response, Claude Opus 5.5 128,000.
How do Claude Opus 5.5 and LongCat-2.5 differ in features?
Claude Opus 5.5 takes text and image input; LongCat-2.5 takes text, image and video.
Further reading
More on Claude Opus 5.5 and LongCat-2.5
Articles on Claude Opus 5.5 and LongCat-2.5
- LongCat-2.5 vs Claude Opus 5: Read the Benchmarks FirstNovember 4, 2026
- GDPval-AA Chart Fact-Check: Opus 5.5 vs GPT-6 Astra on CostSeptember 24, 2026
- GPT-6 Sol vs Claude Opus 5.5, Plus Luna: Best Value per TaskSeptember 24, 2026
- Claude Opus 5.5 Benchmarks: What the Chart Shows and HidesSeptember 23, 2026
- Claude Opus 5.5: Tops the Independent Index at a Lower PriceSeptember 23, 2026
Related comparisons
- Claude Haiku 5.5 vs Claude Opus 5.5
- Claude Opus 5 vs LongCat-2.5
- Claude Opus 5.5 vs Gemini 4 Argon
- DeepSeek-V4.1-Flash vs LongCat-2.5
- Claude Opus 5.5 vs GPT-6.1 Sol
- Gemini 3.1 Flash-Lite vs LongCat-2.5
- Claude Opus 5.5 vs Claude Sonnet 5.5
- Gemini 3.5 Flash-Lite vs LongCat-2.5
- Claude Fable 5 vs Claude Opus 5.5
- GLM-5.3-Flash vs LongCat-2.5
- Claude Opus 4.8 vs Claude Opus 5.5
- GLM-5.3 vs LongCat-2.5
Production evaluation
Choosing between Claude Opus 5.5 and LongCat-2.5?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty