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Anthropic · API-only (closed weights)

Claude Instant

Claude Instant is an API-only (closed weights) language model from Anthropic, released August 9, 2023. On the Epoch Capabilities Index it scores 114.2, rank 194 of 256 rated models.

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Lab
Anthropic
Released
August 9, 2023
Weights
API-only (closed weights)
Parameters
–
Context
–
Price / M tokens
–
Epoch ECI
114.2 #194

Benchmark results

Benchmark (Epoch AI)Score
MMLU64.5%

Links

Epoch AI benchmarks

Models with a similar score

Claude 3 Haiku · Claude 2 · phi-3-small 7.4B · phi-3-medium 14B · PaLM 2-L · Qwen2.5-Coder-14B · Mistral NeMo · Mixtral 8x7B

More from Anthropic

Claude Fable 5.2 · Claude Haiku 5.5 · Claude Sonnet 5.5 · Claude Opus 5.5 · Claude Fable 5.1 · Claude Opus 5 · Claude Sonnet 5 · Claude Fable 5

Data updated Thu, 12 Nov 2026 09:42 UTC. Benchmarks, Capabilities Index and model announcements: Epoch AI, “Capabilities & benchmarking” and “Data on AI models” (CC BY 4.0); category scores are ModelTape's own fit on Epoch's results. Releases and prices: models.dev (MIT). Sizes and quantizations: Hugging Face. “Runs on” figures are estimates from model size, quantization and memory bandwidth (±30–50%).
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