All models
Anthropic · launched 22 Sept 2026
Claude Opus 5.5
Anthropic's newest Opus model. Tokens cost 20% less than Opus 5 and cache reads 60% less, with output generated more than 30% faster.
Read the official announcementModel details
- Vendor
- Anthropic
- Launch date
- 22 Sept 2026
- Input price
- $4.00 / 1M tokens
- Output price
- $20 / 1M tokens
- Cached input
- $0.20 / 1M tokens
- Batch discount
- 50%
- Context window
- 1M tokens
- Max output
- 128K tokens
- Input types
- Text, Image, File
- API model ID
- claude-opus-5-5
- OpenRouter ID
- anthropic/claude-opus-5.5
Compared with Claude Opus 5
Input price
$4.00
was $5.00 · 20% cheaper
Output price
$20
was $25 · 20% cheaper
Blended price
$8.00
was $10 · 20% cheaper
Best published results
- Terminal-Bench 4.0xhigh effort · $7.35 per attempt · reported by Anthropic66.4%
- FrontierCode v1.1medium effort · $0.80 per task · reported by Anthropic54.64%
- CursorBench 4.0max effort · $13.4 per task · reported by Anthropic57.8%
- GDPval-AA v2.1max effort · $8.92 per task · reported by Anthropic1846 Elo
- AutomationBenchmax effort · $1.37 per task · reported by Anthropic40%
- WANDRmax effort · $37.9 per attempt · reported by Anthropic72.3%
- Terminal-Bench 4.0xhigh effort · $7.35 per attempt · reported by Anthropic66.4%
- FrontierCode v1.1medium effort · $0.80 per task · reported by Anthropic54.6%
- CursorBench 4.0max effort · $13.4 per task · reported by Anthropic57.8%
- AA-Briefcase v1.1max effort · $21 per task · reported by Anthropic1822 Elo
Price compared with other models
| Model | Launched | Input / 1M | Output / 1M | Cached / 1M | Blended / 1M | vs Claude Opus 5.5 |
|---|---|---|---|---|---|---|
| GPT-6 LunaOpenAI | 22 Sept 2026 | $0.10 | $0.50 | $0.01 | $0.20 | 98% cheaper |
| GPT-5.6 LunaOpenAI | 9 Jul 2026 | $0.20 | $1.20 | $0.02 | $0.45 | 94% cheaper |
| Claude Sonnet 5Anthropic | 30 Jun 2026 | $2.00 | $10 | $0.20 | $4.00 | 50% cheaper |
| Claude Sonnet 5.5Anthropic | 28 Sept 2026 | $2.00 | $10 | $0.20 | $4.00 | 50% cheaper |
| GPT-6 SolOpenAI | 22 Sept 2026 | $2.00 | $10 | $0.20 | $4.00 | 50% cheaper |
| Claude Opus 5.5Anthropic | 22 Sept 2026 | $4.00 | $20 | $0.20 | $8.00 | Baseline |
| GPT-5.6 SolOpenAIPrice before the GPT-6 launch, from OpenAI's announcement. OpenRouter now lists $2 / $10. | 9 Jul 2026 | $4.00 | $20 | – | $8.00 | Same price |
| Claude Opus 5Anthropic · previous generation | 24 Jul 2026 | $5.00 | $25 | $0.50 | $10 | 25% more |
| Claude Fable 5Anthropic | 9 Jun 2026 | $10 | $50 | $1.00 | $20 | 2.5× the price |
| Claude Fable 5.1Anthropic | 1 Sept 2026 | $10 | $50 | $0.25 | $20 | 2.5× the price |
| GPT-6 AstraOpenAI | 4 Sept 2026 | $10 | $50 | $1.00 | $20 | 2.5× the price |
USD per million tokens, checked 2 Oct 2026 via OpenRouter. Comparison uses the blended price (3 input tokens for every output token).
Official benchmark results
Claude Opus 5.5 launch results
Reported by Anthropic on 22 Sept 2026 · exact values
| Benchmark | Claude Opus 5.5 | Claude Fable 5.1 | Claude Opus 5 | GPT-6 Astra | GPT-5.6 Sol |
|---|---|---|---|---|---|
| Terminal-Bench 4.0Agentic coding | 66.4% | 55.8% | 52.3% | 57.9% | 37.3% |
| FrontierCode v1.1 (main)Agentic coding | 54.4% | 50.3% | 48% | 53.3% | 47.5% |
| CursorBench 4.0Agentic coding | 57.8% | 51.8% | 46.6% | – | 41.7% |
| GDPval-AA v2.1Knowledge work | 1846 Elo | 1735 Elo | 1708 Elo | 1542 Elo | 1588 Elo |
| AutomationBenchBusiness workflows | 40% | 31.4% | 26.9% | 41.4% | 28.8% |
| Humanity's Last ExamMultidisciplinary reasoning · with tools | 67.7% | 65.6% | 63.6% | 57.2% | – |
| Terminal-Bench-Science 0.1Agentic scientific research | 58.7% | 52.6% | 29% | 64.6% | 22.4% |
| OSWorld 2.1Computer use · partial | 81.8% | 80.7% | 74% | – | – |
| ChartographyVisual chart recognition · with tools | 89% | 88.4% | 83.4% | – | – |
- Bold marks the best reported score in each row.
- Claude Opus 5.5 results use adaptive thinking at max effort unless noted.
- Terminal-Bench 4.0 shows each model's highest score: Claude Opus 5.5 at xhigh effort and GPT-6 Astra at high effort. GPT-6 Astra and GPT-5.6 Sol figures there are as reported by OpenAI.
- A dash means the lab did not report a result for that model.
Claude Sonnet 5.5 launch results
Reported by Anthropic on 28 Sept 2026 · exact values
| Benchmark | Claude Sonnet 5.5 | Claude Sonnet 5 | Claude Opus 5.5 | GPT-6 Sol |
|---|---|---|---|---|
| Terminal-Bench 4.0Agentic coding | 70.6% | 10.3% | 66.4% | – |
| FrontierCode 1.1 (main)Agentic coding · Sonnet 5.5 at max effort, 52.1% at xhigh | 46.2% | 42.4% | 54.4% | 49.3% |
| CursorBench 4.0Agentic coding | 55.5% | 34.1% | 57.8% | – |
| GDPval-AA v2.1Knowledge work | 1844 Elo | 1449 Elo | 1846 Elo | 1487 Elo |
| AA-Briefcase v1.1Knowledge work | 1811 Elo | 1359 Elo | 1822 Elo | 1483 Elo |
| Humanity's Last ExamMultidisciplinary reasoning · with tools | 64.5% | 54.9% | 67.7% | – |
| OSWorld 2.1Computer use · partial | 80.1% | 57% | 81.8% | – |
| ChartographyVisual chart recognition · no tools | 61.6% | 15.6% | 64.4% | 53.6% |
- Bold marks the best reported score in each row.
- Claude Opus 5.5's Terminal-Bench 4.0 score is at xhigh effort, its highest.
- OpenAI recently fixed a bug affecting GPT-6 Sol's image understanding; its GDPval-AA, AA-Briefcase and Chartography scores may predate the fix.
- A dash means the lab did not report a result for that model.
Terminal-Bench 4.0
Accuracy against cost · reported by Anthropic on 22 Sept 2026 · exact values
Measures how well a model completes complex, multi-step professional tasks within a command line interface.
- Claude Opus 5.5
- Claude Fable 5.1
- Claude Opus 5
- GPT-6 Astra
- GPT-5.6 Sol
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 | low | 38.5% | $1.29 |
| Claude Opus 5.5 | medium | 57.6% | $2.94 |
| Claude Opus 5.5 | high | 64.2% | $3.88 |
| Claude Opus 5.5 | xhigh | 66.4% | $7.35 |
| Claude Opus 5.5 | max | 64.8% | $11.2 |
| Claude Fable 5.1 | low | 40.2% | $5.70 |
| Claude Fable 5.1 | medium | 43.4% | $7.80 |
| Claude Fable 5.1 | high | 49.4% | $10.5 |
| Claude Fable 5.1 | xhigh | 51.3% | $15.8 |
| Claude Fable 5.1 | max | 55.8% | $19.5 |
| Claude Opus 5 | low | 28.5% | $4.25 |
| Claude Opus 5 | medium | 41.2% | $7.00 |
| Claude Opus 5 | high | 47% | $10.6 |
| Claude Opus 5 | xhigh | 50.6% | $13.5 |
| Claude Opus 5 | max | 52.3% | $15.8 |
| GPT-6 Astra | low | 49.7% | $4.95 |
| GPT-6 Astra | medium | 53.9% | $6.15 |
| GPT-6 Astra | high | 57.9% | $7.21 |
| GPT-6 Astra | xhigh | 57.6% | $7.48 |
| GPT-6 Astra | max | 56.7% | $10.3 |
| GPT-5.6 Sol | low | 7.9% | $1.46 |
| GPT-5.6 Sol | medium | 20.9% | $2.69 |
| GPT-5.6 Sol | high | 26.1% | $4.12 |
| GPT-5.6 Sol | xhigh | 28.5% | $5.39 |
| GPT-5.6 Sol | max | 37.3% | $7.89 |
- Exact values from the data published with Anthropic's announcement.
- GPT-6 Astra and GPT-5.6 Sol figures are as reported by OpenAI.
FrontierCode v1.1, main set
Accuracy against cost · reported by Anthropic on 22 Sept 2026 · exact values
Measures whether an agent's code changes would be merged.
- Claude Opus 5.5
- Claude Fable 5.1
- Claude Opus 5
- GPT-6 Astra
- GPT-5.6 Sol
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 | low | 47.3% | $0.40 |
| Claude Opus 5.5 | medium | 54.64% | $0.80 |
| Claude Opus 5.5 | high | 53.99% | $1.09 |
| Claude Opus 5.5 | xhigh | 51.42% | $2.25 |
| Claude Opus 5.5 | max | 54.43% | $6.19 |
| Claude Fable 5.1 | low | 52.8% | $2.47 |
| Claude Fable 5.1 | medium | 50.91% | $3.28 |
| Claude Fable 5.1 | high | 50.34% | $5.27 |
| Claude Fable 5.1 | xhigh | 48.73% | $9.27 |
| Claude Fable 5.1 | max | 50.28% | $12.8 |
| Claude Opus 5 | low | 41.95% | $2.64 |
| Claude Opus 5 | medium | 53.38% | $4.61 |
| Claude Opus 5 | high | 47.99% | $7.62 |
| Claude Opus 5 | xhigh | 43.65% | $8.99 |
| Claude Opus 5 | max | 48.04% | $12.3 |
| GPT-6 Astra | low | 45.27% | $1.59 |
| GPT-6 Astra | medium | 48.83% | $2.28 |
| GPT-6 Astra | high | 50.94% | $2.85 |
| GPT-6 Astra | xhigh | 50.62% | $3.10 |
| GPT-6 Astra | max | 53.26% | $4.36 |
| GPT-5.6 Sol | low | 35.44% | $1.75 |
| GPT-5.6 Sol | medium | 39.93% | $2.50 |
| GPT-5.6 Sol | high | 45.06% | $3.25 |
| GPT-5.6 Sol | xhigh | 46.84% | $3.88 |
| GPT-5.6 Sol | max | 47.49% | $4.85 |
- Exact values from the data published with Anthropic's announcement.
CursorBench 4.0
Accuracy against cost · reported by Anthropic on 22 Sept 2026 · exact values
Evaluates coding agents on ambiguous, multi-file tasks taken from real Cursor sessions.
- Claude Opus 5.5
- Claude Fable 5.1
- Claude Opus 5
- GPT-5.6 Sol
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 | low | 43.7% | $1.18 |
| Claude Opus 5.5 | medium | 52.5% | $2.90 |
| Claude Opus 5.5 | high | 56% | $3.97 |
| Claude Opus 5.5 | xhigh | 56% | $6.99 |
| Claude Opus 5.5 | max | 57.8% | $13.4 |
| Claude Fable 5.1 | low | 45.1% | $5.44 |
| Claude Fable 5.1 | medium | 46.8% | $7.05 |
| Claude Fable 5.1 | high | 49.2% | $9.08 |
| Claude Fable 5.1 | xhigh | 51.6% | $13 |
| Claude Fable 5.1 | max | 51.8% | $17.3 |
| Claude Opus 5 | low | 40.7% | $4.87 |
| Claude Opus 5 | medium | 43.3% | $6.94 |
| Claude Opus 5 | high | 44.7% | $9.00 |
| Claude Opus 5 | xhigh | 46.1% | $11.4 |
| Claude Opus 5 | max | 46.6% | $11.9 |
| GPT-5.6 Sol | low | 24.6% | $0.87 |
| GPT-5.6 Sol | medium | 31.1% | $1.77 |
| GPT-5.6 Sol | high | 35.7% | $2.85 |
| GPT-5.6 Sol | xhigh | 37.7% | $4.40 |
| GPT-5.6 Sol | max | 41.7% | $8.23 |
- Exact values from the data published with Anthropic's announcement.
GDPval-AA v2.1
Elo against cost · reported by Anthropic on 22 Sept 2026 · exact values
Artificial Analysis's evaluation of agents on real-world professional work across 44 occupations.
- Claude Opus 5.5
- Claude Fable 5.1
- Claude Opus 5
- GPT-6 Astra
- GPT-5.6 Sol
Show data table
| Model | Effort | Elo | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 | low | 1224 Elo | $0.21 |
| Claude Opus 5.5 | medium | 1576 Elo | $0.86 |
| Claude Opus 5.5 | high | 1692 Elo | $1.54 |
| Claude Opus 5.5 | xhigh | 1820 Elo | $4.21 |
| Claude Opus 5.5 | max | 1846 Elo | $8.92 |
| Claude Fable 5.1 | low | 1450 Elo | $1.41 |
| Claude Fable 5.1 | medium | 1536 Elo | $2.17 |
| Claude Fable 5.1 | high | 1617 Elo | $3.43 |
| Claude Fable 5.1 | xhigh | 1721 Elo | $7.09 |
| Claude Fable 5.1 | max | 1735 Elo | $9.59 |
| Claude Opus 5 | low | 1294 Elo | $0.58 |
| Claude Opus 5 | medium | 1476 Elo | $1.36 |
| Claude Opus 5 | high | 1581 Elo | $3.03 |
| Claude Opus 5 | xhigh | 1676 Elo | $4.96 |
| Claude Opus 5 | max | 1708 Elo | $6.76 |
| GPT-6 Astra | low | 1366 Elo | $0.85 |
| GPT-6 Astra | medium | 1468 Elo | $1.82 |
| GPT-6 Astra | high | 1485 Elo | $2.43 |
| GPT-6 Astra | xhigh | 1516 Elo | $3.04 |
| GPT-6 Astra | max | 1542 Elo | $4.53 |
| GPT-5.6 Sol | low | 1289 Elo | $0.27 |
| GPT-5.6 Sol | medium | 1403 Elo | $0.60 |
| GPT-5.6 Sol | high | 1480 Elo | $1.11 |
| GPT-5.6 Sol | xhigh | 1548 Elo | $1.70 |
| GPT-5.6 Sol | max | 1588 Elo | $2.81 |
- Exact values from the data published with Anthropic's announcement.
AutomationBench
Pass rate against cost · reported by Anthropic on 22 Sept 2026 · exact values
Built by Zapier, tests whether an agent can carry out real business workflows across many connected apps.
- Claude Opus 5.5
- Claude Opus 5
- GPT-6 Astra
- GPT-5.6 Sol
Show data table
| Model | Effort | Pass rate | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 | low | 23.3% | $0.50 |
| Claude Opus 5.5 | medium | 28.6% | $0.64 |
| Claude Opus 5.5 | high | 32% | $0.70 |
| Claude Opus 5.5 | xhigh | 34.4% | $0.86 |
| Claude Opus 5.5 | max | 40% | $1.37 |
| Claude Opus 5 | low | 20.4% | $0.75 |
| Claude Opus 5 | medium | 23.9% | $0.89 |
| Claude Opus 5 | high | 20.6% | $1.03 |
| Claude Opus 5 | xhigh | 25.3% | $1.15 |
| Claude Opus 5 | max | 26.9% | $1.27 |
| GPT-6 Astra | low | 30.3% | $1.08 |
| GPT-6 Astra | medium | 34.1% | $1.28 |
| GPT-6 Astra | high | 37.1% | $1.45 |
| GPT-6 Astra | xhigh | 39% | $1.53 |
| GPT-6 Astra | max | 41.4% | $1.77 |
| GPT-5.6 Sol | low | 11.7% | $0.42 |
| GPT-5.6 Sol | medium | 19.6% | $0.57 |
| GPT-5.6 Sol | high | 24.8% | $0.64 |
| GPT-5.6 Sol | xhigh | 26.3% | $0.74 |
| GPT-5.6 Sol | max | 28.8% | $0.91 |
- Exact values from the data published with Anthropic's announcement.
- Runs were performed by Zapier without fallback models, so safeguard interventions counted as failures.
WANDR
Accuracy against cost · reported by Anthropic on 22 Sept 2026 · exact values
Perplexity's benchmark measuring agents on large data collection tasks.
- Claude Opus 5.5
- Claude Fable 5.1
- Claude Opus 5
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Opus 5.5 | low | 31.2% | $1.20 |
| Claude Opus 5.5 | medium | 62.8% | $11.2 |
| Claude Opus 5.5 | high | 67.3% | $16.9 |
| Claude Opus 5.5 | xhigh | 71.3% | $29.1 |
| Claude Opus 5.5 | max | 72.3% | $37.9 |
| Claude Fable 5.1 | low | 63.3% | $23.3 |
| Claude Fable 5.1 | medium | 64.5% | $27.4 |
| Claude Fable 5.1 | high | 66.7% | $33.6 |
| Claude Fable 5.1 | xhigh | 67.7% | $42.8 |
| Claude Fable 5.1 | max | 68.7% | $49 |
| Claude Opus 5 | low | 50.5% | $10.7 |
| Claude Opus 5 | medium | 58.1% | $24 |
| Claude Opus 5 | high | 64.6% | $43.5 |
| Claude Opus 5 | xhigh | 67% | $53.8 |
| Claude Opus 5 | max | 67.2% | $61.6 |
- Exact values from the data published with Anthropic's announcement.
- Claude models ran with offline web search and fetch tools and a 980K-token task budget. This differs from Perplexity's published setup, so scores are not comparable with Perplexity's leaderboard.
Terminal-Bench 4.0
Accuracy against cost · reported by Anthropic on 28 Sept 2026 · exact values
Measures how well a model completes complex, multi-step professional tasks within a command-line interface.
- Claude Sonnet 5.5
- Claude Opus 5.5
- Claude Sonnet 5
- GPT-5.6 Sol
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Sonnet 5.5 | low | 20% | $0.76 |
| Claude Sonnet 5.5 | medium | 28.8% | $0.83 |
| Claude Sonnet 5.5 | high | 43% | $1.94 |
| Claude Sonnet 5.5 | xhigh | 61.5% | $5.30 |
| Claude Sonnet 5.5 | max | 70.6% | $12.5 |
| Claude Opus 5.5 | low | 38.5% | $1.29 |
| Claude Opus 5.5 | medium | 57.6% | $2.94 |
| Claude Opus 5.5 | high | 64.2% | $3.88 |
| Claude Opus 5.5 | xhigh | 66.4% | $7.35 |
| Claude Opus 5.5 | max | 64.8% | $11.2 |
| Claude Sonnet 5 | low | 3.2% | $3.78 |
| Claude Sonnet 5 | medium | 4.4% | $4.83 |
| Claude Sonnet 5 | high | 4.5% | $8.20 |
| Claude Sonnet 5 | xhigh | 7% | $9.95 |
| Claude Sonnet 5 | max | 10.3% | $11.6 |
| GPT-5.6 Sol | low | 7.9% | $1.46 |
| GPT-5.6 Sol | medium | 20.9% | $2.69 |
| GPT-5.6 Sol | high | 26.1% | $4.12 |
| GPT-5.6 Sol | xhigh | 28.5% | $5.39 |
| GPT-5.6 Sol | max | 37.3% | $7.89 |
- Exact values from the data published with Anthropic's announcement.
- OpenAI did not report GPT-6 Sol on this benchmark, so Anthropic shows GPT-5.6 Sol.
FrontierCode v1.1, main set
Accuracy against cost · reported by Anthropic on 28 Sept 2026 · exact values
Measures whether an agent's code changes would be merged.
- Claude Sonnet 5.5
- Claude Opus 5.5
- Claude Sonnet 5
- GPT-6 Sol
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Sonnet 5.5 | low | 29.3% | $0.19 |
| Claude Sonnet 5.5 | medium | 36.5% | $0.24 |
| Claude Sonnet 5.5 | high | 49.4% | $0.42 |
| Claude Sonnet 5.5 | xhigh | 52.1% | $1.59 |
| Claude Sonnet 5.5 | max | 46.2% | $20.8 |
| Claude Opus 5.5 | low | 47.3% | $0.40 |
| Claude Opus 5.5 | medium | 54.6% | $0.80 |
| Claude Opus 5.5 | high | 54% | $1.09 |
| Claude Opus 5.5 | xhigh | 51.4% | $2.25 |
| Claude Opus 5.5 | max | 54.4% | $6.19 |
| Claude Sonnet 5 | low | 28.7% | $2.39 |
| Claude Sonnet 5 | medium | 35.2% | $3.81 |
| Claude Sonnet 5 | high | 39.4% | $6.10 |
| Claude Sonnet 5 | xhigh | 42.7% | $10.1 |
| Claude Sonnet 5 | max | 42.4% | $17.1 |
| GPT-6 Sol | low | 37.3% | $0.43 |
| GPT-6 Sol | medium | 45.9% | $0.77 |
| GPT-6 Sol | high | 47.7% | $1.04 |
| GPT-6 Sol | xhigh | 48.4% | $1.32 |
| GPT-6 Sol | max | 49.3% | $2.07 |
- Exact values from the data published with Anthropic's announcement.
CursorBench 4.0
Accuracy against cost · reported by Anthropic on 28 Sept 2026 · exact values
Evaluates coding agents on ambiguous, multi-file tasks taken from real Cursor sessions.
- Claude Sonnet 5.5
- Claude Opus 5.5
- Claude Sonnet 5
- GPT-5.6 Sol
Show data table
| Model | Effort | Score | Cost per task |
|---|---|---|---|
| Claude Sonnet 5.5 | low | 35.8% | $0.50 |
| Claude Sonnet 5.5 | medium | 39.2% | $0.70 |
| Claude Sonnet 5.5 | high | 47.8% | $1.67 |
| Claude Sonnet 5.5 | xhigh | 53.1% | $3.88 |
| Claude Sonnet 5.5 | max | 55.5% | $9.67 |
| Claude Opus 5.5 | low | 43.7% | $1.17 |
| Claude Opus 5.5 | medium | 52.5% | $2.91 |
| Claude Opus 5.5 | high | 56% | $3.97 |
| Claude Opus 5.5 | xhigh | 56% | $6.98 |
| Claude Opus 5.5 | max | 57.8% | $13.4 |
| Claude Sonnet 5 | low | 24.1% | $1.39 |
| Claude Sonnet 5 | medium | 28% | $2.31 |
| Claude Sonnet 5 | high | 30.8% | $3.48 |
| Claude Sonnet 5 | xhigh | 32% | $4.55 |
| Claude Sonnet 5 | max | 34.1% | $7.17 |
| GPT-5.6 Sol | low | 24.6% | $0.87 |
| GPT-5.6 Sol | medium | 31.1% | $1.77 |
| GPT-5.6 Sol | high | 35.7% | $2.85 |
| GPT-5.6 Sol | xhigh | 37.7% | $4.40 |
| GPT-5.6 Sol | max | 41.7% | $8.23 |
- Exact values from the data published with Anthropic's announcement.
- CursorBench does not report GPT-6 Sol publicly, so Anthropic shows GPT-5.6 Sol.
AA-Briefcase v1.1
Elo against cost · reported by Anthropic on 28 Sept 2026 · exact values
Artificial Analysis's benchmark of long-horizon knowledge work.
- Claude Sonnet 5.5
- Claude Opus 5.5
- Claude Sonnet 5
- GPT-6 Sol
Show data table
| Model | Effort | Elo | Cost per task |
|---|---|---|---|
| Claude Sonnet 5.5 | low | 1264 Elo | $0.87 |
| Claude Sonnet 5.5 | medium | 1461 Elo | $1.64 |
| Claude Sonnet 5.5 | high | 1634 Elo | $3.95 |
| Claude Sonnet 5.5 | xhigh | 1746 Elo | $9.63 |
| Claude Sonnet 5.5 | max | 1811 Elo | $29.2 |
| Claude Opus 5.5 | low | 1285 Elo | $1.15 |
| Claude Opus 5.5 | medium | 1642 Elo | $4.40 |
| Claude Opus 5.5 | high | 1705 Elo | $6.27 |
| Claude Opus 5.5 | xhigh | 1780 Elo | $12.3 |
| Claude Opus 5.5 | max | 1822 Elo | $21 |
| Claude Sonnet 5 | low | 923 Elo | $0.82 |
| Claude Sonnet 5 | medium | 1056 Elo | $1.73 |
| Claude Sonnet 5 | high | 1177 Elo | $3.76 |
| Claude Sonnet 5 | xhigh | 1274 Elo | $7.56 |
| Claude Sonnet 5 | max | 1359 Elo | $14.4 |
| GPT-6 Sol | low | 905 Elo | $0.12 |
| GPT-6 Sol | medium | 1142 Elo | $0.34 |
| GPT-6 Sol | high | 1289 Elo | $0.63 |
| GPT-6 Sol | xhigh | 1364 Elo | $1.19 |
| GPT-6 Sol | max | 1483 Elo | $2.67 |
- Exact values from the data published with Anthropic's announcement.
- Artificial Analysis ran Sonnet 5.5 on a pre-release deployment with a since-fixed structured output bug, which may slightly understate its score.