Model trackerAll models and earlier releases
Anthropic · launched 7 Oct 2026
Claude Haiku 5.5
Anthropic's fastest small model for high-volume tasks, live support and subagents, with adaptive thinking and adjustable effort.
Read the official announcementModel details
- Vendor
- Anthropic
- Launch date
- 7 Oct 2026
- Input price
- $0.10 / 1M tokens
- Output price
- $0.50 / 1M tokens
- Cached input
- $0.01 / 1M tokens
- Batch discount
- 50%
- Context window
- 1M tokens
- Max output
- 128K tokens
- Input types
- Text, Image, File
- API model ID
- claude-haiku-5-5
- OpenRouter ID
- anthropic/claude-haiku-5.5
Listed prices and comparisons apply to prompts up to 100K tokens. Above 100K, input costs $0.50, output $2.50 and cache reads $0.05 per million tokens.
Compared with Claude Haiku 4.5
Input price
$0.10
was $1.00 · 90% cheaper
Output price
$0.50
was $5.00 · 90% cheaper
Blended price
$0.20
was $2.00 · 90% cheaper
Listed prices and comparisons apply to prompts up to 100K tokens. Above 100K, input costs $0.50, output $2.50 and cache reads $0.05 per million tokens.
Best published results
- OSWorld 2.1 (offline subset)max effort · $0.61 per attempt · reported by Anthropic72.4%
- GDPval-AA v2.1max effort · $0.87 per task · reported by Anthropic1620 Elo
- Humanity's Last Exam (no tools)max effort · $0.21 per attempt · reported by Anthropic45.9%
- Terminal-Bench 4.0max effort · $2.64 per attempt · reported by Anthropic39.2%
Price compared with other models
| Model | Launched | Input / 1M | Output / 1M | Cached / 1M | Blended / 1M | vs Claude Haiku 5.5 |
|---|---|---|---|---|---|---|
| Claude Haiku 5.5AnthropicListed prices and comparisons apply to prompts up to 100K tokens. Above 100K, input costs $0.50, output $2.50 and cache reads $0.05 per million tokens. | 7 Oct 2026 | $0.10 | $0.50 | $0.01 | $0.20 | Baseline |
| GPT-6 LunaOpenAI | 22 Sept 2026 | $0.10 | $0.50 | $0.01 | $0.20 | Same price |
| GPT-5.6 LunaOpenAI | 9 Jul 2026 | $0.20 | $1.20 | $0.02 | $0.45 | 2.3× the price |
| Claude Haiku 4.5Anthropic · previous generation | 15 Oct 2025 | $1.00 | $5.00 | $0.10 | $2.00 | 10× the price |
| Claude Sonnet 5Anthropic | 30 Jun 2026 | $2.00 | $10 | $0.20 | $4.00 | 20× the price |
| Claude Sonnet 5.5AnthropicCache reads were reduced from $0.20 to $0.10 per million tokens on 7 October 2026. | 28 Sept 2026 | $2.00 | $10 | $0.10 | $4.00 | 20× the price |
| GPT-6 SolOpenAIListed rates apply up to 272K input tokens. Above 272K, input costs $4, cached input $0.40 and output $15 per million tokens for the full request. | 22 Sept 2026 | $2.00 | $10 | $0.20 | $4.00 | 20× the price |
| GPT-6.1 SolOpenAIListed rates apply up to 272K input tokens. Above 272K, input costs $4, cached input $0.20 and output $15 per million tokens for the full request. | 29 Sept 2026 | $2.00 | $10 | $0.10 | $4.00 | 20× the price |
| Claude Opus 5.5Anthropic | 22 Sept 2026 | $4.00 | $20 | $0.20 | $8.00 | 40× the price |
| 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 | 40× the price |
| Claude Opus 5Anthropic | 24 Jul 2026 | $5.00 | $25 | $0.50 | $10 | 50× the price |
| Claude Fable 5Anthropic | 9 Jun 2026 | $10 | $50 | $1.00 | $20 | 100× the price |
| Claude Fable 5.1Anthropic | 1 Sept 2026 | $10 | $50 | $0.25 | $20 | 100× the price |
| GPT-6 AstraOpenAI | 4 Sept 2026 | $10 | $50 | $1.00 | $20 | 100× the price |
GPT-6.1 Sol and GPT-6 Sol rates were checked on 8 October 2026 against OpenAI model documentation. USD per million tokens, checked 2 Oct 2026 via OpenRouter. Comparison uses the blended price (3 input tokens for every output token). Haiku 5.5 and Sonnet 5.5 prices were updated from Anthropic's 7 October 2026 announcement.
Official benchmark results
Claude Haiku 5.5 launch results
Reported by Anthropic on 7 Oct 2026 · exact values
| Benchmark | Claude Haiku 5.5 | Claude Haiku 4.5 | GPT-6 Luna | Claude Sonnet 5.5 |
|---|---|---|---|---|
| GDPval-AA v2.1Knowledge work | 1620 Elo | 735 Elo | 1437 Elo | 1840 Elo |
| AA-Briefcase v1.1Knowledge work | 1578 Elo | 614 Elo | 1336 Elo | 1824 Elo |
| OSWorld 2.1Computer use · Offline subset | 72.4% | 15.7% | 48.9% | 83.9% |
| Humanity's Last ExamMultidisciplinary reasoning · No tools | 45.9% | 10.2% | – | 56.9% |
| Humanity's Last ExamMultidisciplinary reasoning · With tools | 57.4% | 18.7% | – | 64.5% |
| Terminal-Bench 4.0Agentic coding | 39.2% | 0% | 16.4% | 70.6% |
| FrontierCode 1.1 (Main)Agentic coding | 46.4% | – | 42.4% | 52.1% |
| ChartographyVisual reasoning · No tools | 46.4% | 6.4% | 29.1% | 61.6% |
- Bold marks the best reported score in each row.
- Scores are reported by Anthropic in the Haiku 5.5 announcement. Sonnet 5.5 is included for reference; its FrontierCode result uses xhigh effort.
- A dash means the lab did not report a result for that model.
OSWorld 2.1 (offline subset)
Accuracy against cost · reported by Anthropic on 7 Oct 2026 · exact values
OSWorld 2.1 measures how well agents can operate a real computer to finish long, multi-step tasks.
- Claude Haiku 5.5
- Claude Haiku 4.5
- Claude Sonnet 5.5
- GPT-6 Luna
Show data table
| Model | Effort | Partial-credit score (%) | Cost per attempt |
|---|---|---|---|
| Claude Haiku 5.5 | low | 42% | $0.07 |
| Claude Haiku 5.5 | medium | 53.3% | $0.13 |
| Claude Haiku 5.5 | high | 61.3% | $0.18 |
| Claude Haiku 5.5 | xhigh | 67.6% | $0.28 |
| Claude Haiku 5.5 | max | 72.4% | $0.61 |
| Claude Haiku 4.5 | max | 15.7% | $1.45 |
| Claude Sonnet 5.5 | low | 57.9% | $0.68 |
| Claude Sonnet 5.5 | medium | 66% | $0.93 |
| Claude Sonnet 5.5 | high | 73.2% | $1.38 |
| Claude Sonnet 5.5 | xhigh | 81.1% | $2.22 |
| Claude Sonnet 5.5 | max | 83.9% | $5.73 |
| GPT-6 Luna | low | 19.2% | $0.038 |
| GPT-6 Luna | medium | 37.5% | $0.13 |
| GPT-6 Luna | high | 42.3% | $0.14 |
| GPT-6 Luna | xhigh | 44.8% | $0.17 |
| GPT-6 Luna | max | 48.9% | $0.20 |
- Exact score and cost values from the chart data embedded in Anthropic's announcement.
- Haiku 4.5 is reported at max effort only.
GDPval-AA v2.1
Elo against cost · reported by Anthropic on 7 Oct 2026 · exact values
Artificial Analysis's GDPval-AA v2.1 evaluates agents on real-world professional work across 44 occupations.
- Claude Haiku 5.5
- Claude Haiku 4.5
- Claude Sonnet 5.5
- GPT-6 Luna
Show data table
| Model | Effort | Elo, as reported | Cost per task |
|---|---|---|---|
| Claude Haiku 5.5 | low | 1125 Elo | $0.012 |
| Claude Haiku 5.5 | medium | 1277 Elo | $0.03 |
| Claude Haiku 5.5 | high | 1420 Elo | $0.089 |
| Claude Haiku 5.5 | xhigh | 1513 Elo | $0.27 |
| Claude Haiku 5.5 | max | 1620 Elo | $0.87 |
| Claude Haiku 4.5 | max | 735 Elo | $0.24 |
| Claude Sonnet 5.5 | low | 1179 Elo | $0.22 |
| Claude Sonnet 5.5 | medium | 1324 Elo | $0.27 |
| Claude Sonnet 5.5 | high | 1551 Elo | $0.62 |
| Claude Sonnet 5.5 | xhigh | 1731 Elo | $1.88 |
| Claude Sonnet 5.5 | max | 1840 Elo | $6.78 |
| GPT-6 Luna | low | 1036 Elo | $0.0038 |
| GPT-6 Luna | medium | 1262 Elo | $0.02 |
| GPT-6 Luna | high | 1344 Elo | $0.03 |
| GPT-6 Luna | xhigh | 1364 Elo | $0.05 |
| GPT-6 Luna | max | 1437 Elo | $0.09 |
- Exact score and cost values from the chart data embedded in Anthropic's announcement.
- Haiku 4.5 is reported at max effort only.
Humanity's Last Exam (no tools)
Accuracy against cost · reported by Anthropic on 7 Oct 2026 · exact values
Humanity's Last Exam (HLE) is a test of expert-level academic knowledge and reasoning.
- Claude Haiku 5.5
- Claude Haiku 4.5
- Claude Sonnet 5.5
Show data table
| Model | Effort | Score (%) | Cost per attempt |
|---|---|---|---|
| Claude Haiku 5.5 | low | 30.9% | $0.0033 |
| Claude Haiku 5.5 | medium | 35.5% | $0.0069 |
| Claude Haiku 5.5 | high | 39.7% | $0.02 |
| Claude Haiku 5.5 | xhigh | 44.1% | $0.065 |
| Claude Haiku 5.5 | max | 45.9% | $0.21 |
| Claude Haiku 4.5 | max | 10.2% | $0.093 |
| Claude Sonnet 5.5 | low | 41.4% | $0.029 |
| Claude Sonnet 5.5 | medium | 43.2% | $0.033 |
| Claude Sonnet 5.5 | high | 47.9% | $0.077 |
| Claude Sonnet 5.5 | xhigh | 53% | $0.20 |
| Claude Sonnet 5.5 | max | 56.9% | $0.89 |
- Exact score and cost values from the chart data embedded in Anthropic's announcement.
- Haiku 4.5 is reported at max effort only.
Terminal-Bench 4.0
Accuracy against cost · reported by Anthropic on 7 Oct 2026 · exact values
Terminal-Bench 4.0 measures how well a model can complete complex, multi-step professional tasks within a command-line interface.
- Claude Haiku 5.5
- Claude Haiku 4.5
- Claude Sonnet 5.5 ($0.10 cache reads)
- Claude Sonnet 5.5 ($0.20 cache reads)
Show data table
| Model | Effort | Score (pass@1, %) | Cost per attempt |
|---|---|---|---|
| Claude Haiku 5.5 | low | 12.7% | $0.42 |
| Claude Haiku 5.5 | medium | 20.3% | $0.68 |
| Claude Haiku 5.5 | high | 24.8% | $1.04 |
| Claude Haiku 5.5 | xhigh | 31.5% | $1.75 |
| Claude Haiku 5.5 | max | 39.2% | $2.64 |
| Claude Haiku 4.5 | max | 0% | $0.79 |
| Claude Sonnet 5.5 ($0.10 cache reads) | low | 20% | $0.62 |
| Claude Sonnet 5.5 ($0.10 cache reads) | medium | 28.8% | $0.68 |
| Claude Sonnet 5.5 ($0.10 cache reads) | high | 43% | $1.46 |
| Claude Sonnet 5.5 ($0.10 cache reads) | xhigh | 61.5% | $4.34 |
| Claude Sonnet 5.5 ($0.10 cache reads) | max | 70.6% | $10.4 |
| Claude Sonnet 5.5 ($0.20 cache reads) | low | 20% | $0.79 |
| Claude Sonnet 5.5 ($0.20 cache reads) | medium | 28.8% | $0.86 |
| Claude Sonnet 5.5 ($0.20 cache reads) | high | 43% | $1.97 |
| Claude Sonnet 5.5 ($0.20 cache reads) | xhigh | 61.5% | $5.83 |
| Claude Sonnet 5.5 ($0.20 cache reads) | max | 70.6% | $14.2 |
- Exact score and cost values from the chart data embedded in Anthropic's announcement.
- Haiku 4.5 is reported at max effort only.
- Sonnet 5.5 is shown before and after the 7 October cache-read price cut, with identical scores and different costs.