gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimize…
Model details →OpenAI: gpt-oss-120b vs Anthropic Claude Haiku Latest
OpenAI: gpt-oss-120b and Anthropic Claude Haiku Latest are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
This model always redirects to the latest model in the Anthropic Claude Haiku family.
Model details →Side-by-side comparison
| Capability | OpenAI: gpt-oss-120b | Anthropic Claude Haiku Latest | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 200K | 🏆 Anthropic Claude Haiku Latest |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.04 | $1.00 | 🏆 OpenAI: gpt-oss-120b |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.17 | $5.00 | 🏆 OpenAI: gpt-oss-120b |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 Anthropic Claude Haiku Latest |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is OpenAI: gpt-oss-120b better than Anthropic Claude Haiku Latest?
OpenAI: gpt-oss-120b and Anthropic Claude Haiku Latest are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between OpenAI: gpt-oss-120b and Anthropic Claude Haiku Latest?
Input: $0.04 vs $1.00 per 1M tokens. Output: $0.17 vs $5.00 per 1M tokens.
What context windows do OpenAI: gpt-oss-120b and Anthropic Claude Haiku Latest support?
OpenAI: gpt-oss-120b supports up to 131K tokens. Anthropic Claude Haiku Latest supports up to 200K tokens.
Do both OpenAI: gpt-oss-120b and Anthropic Claude Haiku Latest support tool calling?
OpenAI: gpt-oss-120b: yes. Anthropic Claude Haiku Latest: yes.
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