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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. GPT OSS 120BOpenAIRemove
  2. Claude Fable 5.2AnthropicRemove
gpt-oss-120b vs claude-fable-5.2
AttributeGPT OSS 120Bgpt-oss-120bClaude Fable 5.2claude-fable-5.2
Pricing
Input$0.037 / 1M$8.00 / 1M
Output$0.17 / 1M$40.00 / 1M
Cache Write (5m)$0.037 / 1M$10.00 / 1M
Cache Write (1h)$0.037 / 1M$16.00 / 1M
Cache Read$0.037 / 1M$0.20 / 1M
Web Search$0 / 1M$0 / 1M
Context
Max context131.1K1M
Max outputN/AN/A
Capabilities
VisionNoYes
Function CallingYesYes
JSON ModeYesYes
StreamingYesYes
Catalogue
ProviderOpenAIAnthropic
Categorychatchat
Charge typePay As You GoPay As You Go
Released——
Description
Summarygpt-oss-120b is an open-weight 117B-parameter MoE model from OpenAI, built for advanced reasoning and production workloads. Only about 5.1B parameters are active per step, and it’s optimized to run on a single H100 using MXFP4 quantization. It supports adjustable reasoning depth, full chain-of-thought, and native agent features like tool use, function calling, browsing, and structured outputs.Claude Fable 5.2 is Anthropic's most capable model for advanced technical work and open-ended problem solving, delivering significant improvements in coding, reasoning, and vision over Fable 5.1. It excels at exceptionally complex tasks, including large-scale software migrations, electronic system design, and advanced scientific and mathematical research. With up to 30% faster output generation, clearer communication, and always-on adaptive extended thinking, Fable 5.2 supports configurable reasoning effort from low to max (default high), with thinking preserved across turns. Designed for frontier engineering, scientific discovery, and ambitious long-horizon agentic workflows, it complements Opus 5.5 as a specialized option for the most demanding technical challenges.